diff --git a/.gitattributes b/.gitattributes
index d1570aff1cd79..cf8890eefbda8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -6,3 +6,4 @@
 /src/Symfony/Component/Runtime export-ignore
 /src/Symfony/Component/Translation/Bridge export-ignore
 /src/Symfony/Component/Intl/Resources/data/*/* linguist-generated=true
+/.git* export-ignore
diff --git a/.github/sync-packages.php b/.github/sync-packages.php
new file mode 100644
index 0000000000000..d947c586d0c91
--- /dev/null
+++ b/.github/sync-packages.php
@@ -0,0 +1,80 @@
+<?php
+
+if ('cli' !== PHP_SAPI) {
+    echo "This script can only be run from the command line.\n";
+    exit(1);
+}
+
+$mainRepo = 'https://github.com/symfony/symfony';
+exec('find src/ -name composer.json', $packages);
+
+foreach ($packages as $package) {
+    $package = dirname($package);
+
+    if (str_contains($package, '/Resources/')) {
+        continue;
+    }
+
+    $c = file_get_contents($package.'/.gitattributes');
+    $c = preg_replace('{^/\.git.*+\n}m', '', $c);
+    $c .= "/.git* export-ignore\n";
+    file_put_contents($package.'/.gitattributes', $c);
+
+
+    @mkdir($package.'/.github');
+    file_put_contents($package.'/.github/PULL_REQUEST_TEMPLATE.md', <<<EOTXT
+        Please do not submit any Pull Requests here. They will be closed.
+        ---
+
+        Please submit your PR here instead:
+        {$mainRepo}
+
+        This repository is what we call a "subtree split": a read-only subset of that main repository.
+        We're looking forward to your PR there!
+
+        EOTXT
+    );
+
+    @mkdir($package.'/.github/workflows');
+    file_put_contents($package.'/.github/workflows/check-subtree-split.yml', <<<EOTXT
+        name: Check subtree split
+
+        on:
+          pull_request_target:
+
+        jobs:
+          close-pull-request:
+            runs-on: ubuntu-latest
+
+            steps:
+            - name: Close pull request
+              uses: actions/github-script@v6
+              with:
+                script: |
+                  if (context.repo.owner === "symfony") {
+                    github.rest.issues.createComment({
+                      owner: "symfony",
+                      repo: context.repo.repo,
+                      issue_number: context.issue.number,
+                      body: `
+                  Thanks for your Pull Request! We love contributions.
+
+                  However, you should instead open your PR on the main repository:
+                  {$mainRepo}
+
+                  This repository is what we call a "subtree split": a read-only subset of that main repository.
+                  We're looking forward to your PR there!
+                  `
+                    });
+
+                    github.rest.pulls.update({
+                      owner: "symfony",
+                      repo: context.repo.repo,
+                      pull_number: context.issue.number,
+                      state: "closed"
+                    });
+                  }
+
+        EOTXT
+    );
+}
diff --git a/.github/sync-translations.php b/.github/sync-translations.php
index 13f05d1459c86..fa3b28a7fec7e 100644
--- a/.github/sync-translations.php
+++ b/.github/sync-translations.php
@@ -108,6 +108,8 @@ function mergeDom(\DOMDocument $dom, \DOMNode $tree, \DOMNode $input)
             if ($catalogue->defines($resname, $domain)) {
                 $translation = $catalogue->get($resname, $domain);
                 $metadata = $catalogue->getMetadata($resname, $domain);
+            } else {
+                $translation = $source;
             }
             $metadata['id'] = $enCatalogue->getMetadata($resname, $domain)['id'];
             if ($resname !== $source) {
diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index c21cc6e59321f..1a0dd8c254f57 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -124,6 +124,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - name: Install system dependencies
         run: |
@@ -218,13 +220,11 @@ jobs:
       - name: Check for changes in translation files
         id: changed-translation-files
         run: |
-          if git diff --quiet HEAD~1 HEAD -- 'src/**/Resources/translations/*.xlf'; then
-            echo "{changed}={true}" >> $GITHUB_OUTPUT
-          else
-            echo "{changed}={false}" >> $GITHUB_OUTPUT
-          fi
+          echo 'changed='$((git diff --quiet HEAD~1 HEAD -- 'src/**/Resources/translations/*.xlf' || (echo 'true' && exit 1)) && echo 'false') >> $GITHUB_OUTPUT
 
       - name: Check Translation Status
         if: steps.changed-translation-files.outputs.changed == 'true'
         run: |
           php src/Symfony/Component/Translation/Resources/bin/translation-status.php -v
+          php .github/sync-translations.php
+          git diff --exit-code src/ || (echo '::error::Run "php .github/sync-translations.php" to fix XLIFF files.' && exit 1)
diff --git a/.github/workflows/package-tests.yml b/.github/workflows/package-tests.yml
index 96b7451b7f945..0792f4e8d6da5 100644
--- a/.github/workflows/package-tests.yml
+++ b/.github/workflows/package-tests.yml
@@ -101,6 +101,7 @@ jobs:
           done
 
           exit $ok
+
       - name: Verify symfony/deprecation-contracts requirements
         run: |
           set +e
@@ -141,3 +142,9 @@ jobs:
           done
 
           exit $ok
+
+      - name: Verify subtree-splits are auto-closed
+        run: |
+          php .github/sync-packages.php
+          git add src/
+          git diff --staged --exit-code || (echo '::error::Please run "php .github/sync-packages.php".' && exit 1)
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 1e4e77ab46ffc..c9deba395c405 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -50,7 +50,7 @@ jobs:
           coverage: "none"
           ini-values: date.timezone=UTC,memory_limit=-1,default_socket_timeout=10,session.gc_probability=0,apc.enable_cli=1,zend.assertions=1
           php-version: "${{ matrix.php }}"
-          extensions: "${{ env.extensions }}"
+          extensions: "${{ matrix.extensions || env.extensions }}"
           tools: flex
 
       - name: Configure environment
diff --git a/CHANGELOG-7.0.md b/CHANGELOG-7.0.md
index 394009335f611..93c7b7d838a49 100644
--- a/CHANGELOG-7.0.md
+++ b/CHANGELOG-7.0.md
@@ -7,6 +7,47 @@ in 7.0 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v7.0.0...v7.0.1
 
+* 7.0.7 (2024-04-29)
+
+ * bug #54699 [DoctrineBridge] Update AbstractSchemaListener to adjust more database params (ywisax)
+ * bug #54691 [Finder] Also consider .git inside the basedir of in() directory (nickvergessen)
+ * bug #54724 [AssetMapper] Check asset/vendor directory is writable (smnandre)
+ * bug #54750 [Validator] detect wrong usages of minMessage/maxMessage in options (xabbuh)
+ * bug #54751 [Validator]  detect wrong e-mail validation modes (xabbuh)
+ * bug #54723 [Form] read form values using the chain data accessor (xabbuh)
+ * bug #54706 [Yaml] call substr() with integer offsets (xabbuh)
+ * bug #54675 [PropertyInfo] Fix PHPStan properties type in trait (mtarld)
+ * bug #54673 [Messenger] explicitly cast boolean SSL stream options (xabbuh)
+ * bug #54665 Add test for AccessTokenHeaderRegex and adjust regex (Spomky)
+ * bug #54635 [Serializer] Revert "Fix object normalizer when properties has the same name as their accessor" - it was a BC Break (NeilPeyssard)
+ * bug #54625 [Intl] Remove resources data from classmap generation (shyim)
+ * bug #54598 [TwigBridge]  implement NodeVisitorInterface instead of extending AbstractNodeVisitor (xabbuh)
+ * bug #54072 [HttpKernel] Fix datacollector caster for reference object property (ebuildy)
+ * bug #54395 [Serializer] Fixing PHP warning in the ObjectNormalizer with MaxDepth enabled (jaydiablo)
+ * bug #54564 [Translation] Skip state=needs-translation entries only when source == target (nicolas-grekas)
+ * bug #54579 [Cache] Always select database for persistent redis connections (uncaught)
+ * bug #54059 [Security] Validate that CSRF token in form login is string similar to username/password (glaubinix)
+ * bug #54530 [Clock] initialize the current time with midnight before modifying the date (xabbuh)
+ * bug #54547 [HttpKernel] Force non lazy controller services (smnandre)
+ * bug #54517 [HttpClient] Let curl handle transfer encoding (michaelhue)
+ * bug #52917 [Serializer] Fix unexpected allowed attributes (mtarld)
+ * bug #54063 [FrameworkBundle] Fix registration of the bundle path to translation (FlyingDR)
+ * bug #54392 [Messenger] Make Doctrine connection ignore unrelated tables on setup (MatTheCat)
+ * bug #54513 [HtmlSanitizer] Ignore Processing Instructions (smnandre)
+ * bug #54506 [HttpFoundation] Set content-type header in RedirectResponse (smnandre)
+ * bug #54505 [Serializer]  initialize serializer in trait with null (xabbuh)
+ * bug #52698 [Serializer] Fix XML scalar to object denormalization (mtarld)
+ * bug #54485 [Serializer] Ignore when using #[Ignore] on a non-accessor (nicolas-grekas)
+ * bug #54105 [Messenger] Improve deadlock handling on `ack()` and `reject()` (jwage)
+ * bug #54242 [HttpClient] [EventSourceHttpClient] Fix consuming SSEs with \r\n separator (fancyweb)
+ * bug #54487 [Validator] Accept `Stringable` in `ExecutionContext::build/addViolation()` (alexandre-daubois)
+ * bug #54456 [DomCrawler] Encode html entities only if nessecary (ausi)
+ * bug #54484 [Serializer] reset backed_enum priority, and re-prioritise translatable (GwendolenLynch)
+ * bug #54471 [Filesystem] Strengthen the check of file permissions in `dumpFile` (alexandre-daubois)
+ * bug #54403 [FrameworkBundle] [Command] Fix #54402: Suppress PHP warning when is_readable() tries to access dirs outside of open_basedir restrictions (Jeldrik Geraedts)
+ * bug #54440 [Console] return null when message with name is not set (xabbuh)
+ * bug #54468 [Translation] Fix LocaleSwitcher throws when intl not loaded (smnandre)
+
 * 7.0.6 (2024-04-03)
 
  * bug #54400 [HttpClient] stop all server processes after tests have run (xabbuh)
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index f676651321bef..04ba9eca15947 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -32,8 +32,8 @@ The Symfony Connect username in parenthesis allows to get more information
  - Yonel Ceruto (yonelceruto)
  - Hugo Hamon (hhamon)
  - Tobias Nyholm (tobias)
- - Samuel ROZE (sroze)
  - Jérôme Tamarelle (gromnan)
+ - Samuel ROZE (sroze)
  - Pascal Borreli (pborreli)
  - Antoine Lamirault (alamirault)
  - Romain Neutron
@@ -58,9 +58,9 @@ The Symfony Connect username in parenthesis allows to get more information
  - Alexandre Salomé (alexandresalome)
  - Grégoire Paris (greg0ire)
  - William DURAND
+ - Vincent Langlet (deviling)
  - ornicar
  - Dany Maillard (maidmaid)
- - Vincent Langlet (deviling)
  - Eriksen Costa
  - Diego Saint Esteben (dosten)
  - stealth35 ‏ (stealth35)
@@ -77,10 +77,10 @@ The Symfony Connect username in parenthesis allows to get more information
  - Saša Stamenković (umpirsky)
  - Allison Guilhem (a_guilhem)
  - Mathieu Piot (mpiot)
+ - Simon André (simonandre)
  - Mathieu Santostefano (welcomattic)
  - Alexander Schranz (alexander-schranz)
  - Vasilij Duško (staff)
- - Simon André (simonandre)
  - Sarah Khalil (saro0h)
  - Laurent VOULLEMIER (lvo)
  - Konstantin Kudryashov (everzet)
@@ -92,8 +92,8 @@ The Symfony Connect username in parenthesis allows to get more information
  - Florin Patan (florinpatan)
  - Vladimir Reznichenko (kalessil)
  - Peter Rehm (rpet)
- - Henrik Bjørnskov (henrikbjorn)
  - Dariusz Ruminski
+ - Henrik Bjørnskov (henrikbjorn)
  - David Buchmann (dbu)
  - Andrej Hudec (pulzarraider)
  - Jáchym Toušek (enumag)
@@ -103,20 +103,20 @@ The Symfony Connect username in parenthesis allows to get more information
  - Denis (yethee)
  - Michel Weimerskirch (mweimerskirch)
  - Issei Murasawa (issei_m)
+ - Arnout Boks (aboks)
  - Douglas Greenshields (shieldo)
  - Frank A. Fiebig (fafiebig)
  - Baldini
  - Alex Pott
  - Fran Moreno (franmomu)
- - Arnout Boks (aboks)
  - Charles Sarrazin (csarrazi)
  - Tomas Norkūnas (norkunas)
  - Henrik Westphal (snc)
  - Dariusz Górecki (canni)
  - Ener-Getick
+ - Hubert Lenoir (hubert_lenoir)
  - Graham Campbell (graham)
  - Antoine Makdessi (amakdessi)
- - Hubert Lenoir (hubert_lenoir)
  - Tugdual Saunier (tucksaun)
  - Lee McDermott
  - Brandon Turner
@@ -141,13 +141,13 @@ The Symfony Connect username in parenthesis allows to get more information
  - Sebastiaan Stok (sstok)
  - Maxime STEINHAUSSER
  - Rokas Mikalkėnas (rokasm)
+ - Tac Tacelosky (tacman1123)
  - gnito-org
  - Tim Nagel (merk)
  - Chris Wilkinson (thewilkybarkid)
  - Jérôme Vasseur (jvasseur)
  - Peter Kokot (peterkokot)
  - Brice BERNARD (brikou)
- - Tac Tacelosky (tacman1123)
  - Michal Piotrowski
  - marc.weistroff
  - Lars Strojny (lstrojny)
@@ -164,13 +164,13 @@ The Symfony Connect username in parenthesis allows to get more information
  - Colin Frei
  - excelwebzone
  - Paráda József (paradajozsef)
+ - Nicolas Philippe (nikophil)
  - Baptiste Clavié (talus)
  - Alexander Schwenn (xelaris)
  - Fabien Pennequin (fabienpennequin)
  - Gordon Franke (gimler)
  - Malte Schlüter (maltemaltesich)
  - jeremyFreeAgent (jeremyfreeagent)
- - Nicolas Philippe (nikophil)
  - Joshua Thijssen
  - Vasilij Dusko
  - Daniel Wehner (dawehner)
@@ -190,6 +190,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Juti Noppornpitak (shiroyuki)
  - Gregor Harlan (gharlan)
  - Anthony MARTIN
+ - Andreas Schempp (aschempp)
  - Sebastian Hörl (blogsh)
  - Tigran Azatyan (tigranazatyan)
  - Christopher Hertel (chertel)
@@ -204,7 +205,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Alexis Lefebvre
  - SpacePossum
  - Richard van Laak (rvanlaak)
- - Andreas Schempp (aschempp)
  - Andreas Braun
  - Hugo Alliaume (kocal)
  - Valtteri R (valtzu)
@@ -214,6 +214,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Dāvis Zālītis (k0d3r1s)
  - Rafael Dohms (rdohms)
  - Roman Martinuk (a2a4)
+ - Thomas Landauer (thomas-landauer)
  - jwdeitch
  - David Prévot (taffit)
  - Jérôme Parmentier (lctrs)
@@ -230,7 +231,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Albert Casademont (acasademont)
  - George Mponos (gmponos)
  - Richard Shank (iampersistent)
- - Thomas Landauer (thomas-landauer)
  - Roland Franssen :)
  - Romain Monteil (ker0x)
  - Sergey (upyx)
@@ -240,12 +240,14 @@ The Symfony Connect username in parenthesis allows to get more information
  - Fabien Bourigault (fbourigault)
  - Olivier Dolbeau (odolbeau)
  - Rouven Weßling (realityking)
+ - Daniel Burger
  - Ben Davies (bendavies)
  - YaFou
  - Clemens Tolboom
  - Oleg Voronkovich
  - Helmer Aaviksoo
  - Alessandro Lai (jean85)
+ - Jan Rosier (rosier)
  - 77web
  - Gocha Ossinkine (ossinkine)
  - Jesse Rushlow (geeshoe)
@@ -265,7 +267,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - zairig imad (zairigimad)
  - Colin O&#039;Dell (colinodell)
  - Sébastien Alfaiate (seb33300)
- - Daniel Burger
  - James Halsall (jaitsu)
  - Christian Scheb
  - Guillaume (guill)
@@ -275,7 +276,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Anthony GRASSIOT (antograssiot)
  - Dmitrii Chekaliuk (lazyhammer)
  - Clément JOBEILI (dator)
- - Jan Rosier (rosier)
  - Andreas Möller (localheinz)
  - Marek Štípek (maryo)
  - Daniel Espendiller
@@ -307,6 +307,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Christian Schmidt
  - Andreas Hucks (meandmymonkey)
  - Noel Guilbert (noel)
+ - Bastien Jaillot (bastnic)
  - Stadly
  - Stepan Anchugov (kix)
  - bronze1man
@@ -322,6 +323,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Pierre Minnieur (pminnieur)
  - Dominique Bongiraud
  - Hugo Monteiro (monteiro)
+ - Karoly Gossler (connorhu)
  - Bram Leeda (bram123)
  - Dmitrii Poddubnyi (karser)
  - Julien Pauli
@@ -339,13 +341,13 @@ The Symfony Connect username in parenthesis allows to get more information
  - John Kary (johnkary)
  - Võ Xuân Tiến (tienvx)
  - fd6130 (fdtvui)
+ - Priyadi Iman Nurcahyo (priyadi)
  - Alan Poulain (alanpoulain)
  - Maciej Malarz (malarzm)
  - Marcin Sikoń (marphi)
  - Michele Orselli (orso)
  - Sven Paulus (subsven)
  - Maxime Veber (nek-)
- - Bastien Jaillot (bastnic)
  - Soner Sayakci
  - Valentine Boineau (valentineboineau)
  - Rui Marinho (ruimarinho)
@@ -369,7 +371,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - dFayet
  - Rob Frawley 2nd (robfrawley)
  - Renan (renanbr)
- - Karoly Gossler (connorhu)
  - Nikita Konstantinov (unkind)
  - Dariusz
  - Francois Zaninotto
@@ -385,9 +386,10 @@ The Symfony Connect username in parenthesis allows to get more information
  - Benoît Burnichon (bburnichon)
  - maxime.steinhausser
  - Oleg Andreyev (oleg.andreyev)
- - Priyadi Iman Nurcahyo (priyadi)
  - Roman Ring (inori)
  - Xavier Montaña Carreras (xmontana)
+ - Arjen van der Meijden
+ - Indra Gunawan (indragunawan)
  - Peter Kruithof (pkruithof)
  - Alex Hofbauer (alexhofbauer)
  - Romaric Drigon (romaricdrigon)
@@ -462,9 +464,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Wouter Van Hecke
  - Baptiste Lafontaine (magnetik)
  - Iker Ibarguren (ikerib)
- - Indra Gunawan (indragunawan)
  - Michael Holm (hollo)
- - Arjen van der Meijden
  - Blanchon Vincent (blanchonvincent)
  - Michał (bambucha15)
  - Christian Schmidt
@@ -487,6 +487,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Bertrand Zuchuat (garfield-fr)
  - Marc Morera (mmoreram)
  - Quynh Xuan Nguyen (seriquynh)
+ - Asis Pattisahusiwa
  - Gabor Toth (tgabi333)
  - realmfoo
  - Fabien S (bafs)
@@ -524,6 +525,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Ahmed Raafat
  - Philippe Segatori
  - Thibaut Cheymol (tcheymol)
+ - Aurélien Pillevesse (aurelienpillevesse)
  - Erin Millard
  - Matthew Lewinski (lewinski)
  - Islam Israfilov (islam93)
@@ -556,6 +558,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - FORT Pierre-Louis (plfort)
  - Terje Bråten
  - Gonzalo Vilaseca (gonzalovilaseca)
+ - Stiven Llupa (sllupa)
  - Tarmo Leppänen (tarlepp)
  - Jakub Kucharovic (jkucharovic)
  - Daniel STANCU
@@ -591,7 +594,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Greg Thornton (xdissent)
  - Alex Bowers
  - Michel Roca (mroca)
- - Asis Pattisahusiwa
  - Costin Bereveanu (schniper)
  - Andrii Dembitskyi
  - Gasan Guseynov (gassan)
@@ -653,6 +655,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Jeanmonod David (jeanmonod)
  - Webnet team (webnet)
  - Tobias Bönner
+ - Nicolas Rigaud
  - Ben Ramsey (ramsey)
  - Berny Cantos (xphere81)
  - Antonio Jose Cerezo (ajcerezo)
@@ -667,6 +670,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Matheo Daninos (mathdns)
  - Niklas Fiekas
  - Mark Challoner (markchalloner)
+ - Jonathan H. Wage
  - Markus Bachmann (baachi)
  - Matthieu Lempereur (mryamous)
  - Gunnstein Lye (glye)
@@ -733,7 +737,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Vadim Borodavko (javer)
  - Tavo Nieves J (tavoniievez)
  - Luc Vieillescazes (iamluc)
- - Stiven Llupa (sllupa)
  - Erik Saunier (snickers)
  - François Dume (franek)
  - Jerzy Lekowski (jlekowski)
@@ -774,6 +777,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Nathan Dench (ndenc2)
  - Gijs van Lammeren
  - Sebastian Bergmann
+ - Nadim AL ABDOU (nadim)
  - Matthew Grasmick
  - Miroslav Šustek (sustmi)
  - Pablo Díez (pablodip)
@@ -822,6 +826,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - alexpods
  - Adam Szaraniec
  - Dariusz Ruminski
+ - Pierre Ambroise (dotordu)
  - Romain Gautier (mykiwi)
  - Matthieu Bontemps
  - Erik Trapman
@@ -914,7 +919,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - julien57
  - Mátyás Somfai (smatyas)
  - Bastien DURAND (deamon)
- - Nicolas Rigaud
  - Dmitry Simushev
  - alcaeus
  - Ahmed Ghanem (ahmedghanem00)
@@ -938,7 +942,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Christin Gruber (christingruber)
  - Sebastian Blum
  - Daniel González (daniel.gonzalez)
- - Jonathan H. Wage
  - Julien Turby
  - Ricky Su (ricky)
  - scyzoryck
@@ -967,9 +970,11 @@ The Symfony Connect username in parenthesis allows to get more information
  - Christophe Villeger (seragan)
  - Krystian Marcisz (simivar)
  - Julien Fredon
+ - Neil Peyssard (nepey)
  - Xavier Leune (xleune)
  - Hany el-Kerdany
  - Wang Jingyu
+ - Baptiste CONTRERAS
  - Åsmund Garfors
  - Maxime Douailin
  - Jean Pasdeloup
@@ -982,6 +987,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Sofien Naas
  - Alexandre Parent
  - Daniel Badura
+ - Brajk19
  - Roger Guasch (rogerguasch)
  - DT Inier (gam6itko)
  - Dustin Dobervich (dustin10)
@@ -1130,7 +1136,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Aleksey Prilipko
  - Jelle Raaijmakers (gmta)
  - Andrew Berry
- - Nadim AL ABDOU (nadim)
  - Sylvain BEISSIER (sylvain-beissier)
  - Wybren Koelmans (wybren_koelmans)
  - Roberto Nygaard
@@ -1229,6 +1234,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - fedor.f
  - Yosmany Garcia (yosmanyga)
  - Jeremiasz Major
+ - Jibé Barth (jibbarth)
  - Trevor North
  - Degory Valentine
  - izzyp
@@ -1240,7 +1246,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Glodzienski
  - Natsuki Ikeguchi
  - Krzysztof Łabuś (crozin)
- - Pierre Ambroise (dotordu)
  - Xavier Lacot (xavier)
  - Jon Dufresne
  - possum
@@ -1248,6 +1253,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Adrien Roches (neirda24)
  - _sir_kane (waly)
  - Olivier Maisonneuve
+ - Gálik Pál
  - Andrei C. (moldman)
  - Mike Meier (mykon)
  - Pedro Miguel Maymone de Resende (pedroresende)
@@ -1290,6 +1296,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Reen Lokum
  - Dennis Langen (nijusan)
  - Quentin Dreyer (qkdreyer)
+ - Francisco Alvarez (sormes)
  - Martin Parsiegla (spea)
  - Manuel Alejandro Paz Cetina
  - Denis Charrier (brucewouaigne)
@@ -1353,6 +1360,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Calin Mihai Pristavu
  - Gabrielle Langer
  - Jörn Lang
+ - Adrian Günter (adrianguenter)
  - David Marín Carreño (davefx)
  - Fabien LUCAS (flucas2)
  - Alex (garrett)
@@ -1573,9 +1581,11 @@ The Symfony Connect username in parenthesis allows to get more information
  - Chris de Kok
  - Eduard Bulava (nonanerz)
  - Andreas Kleemann (andesk)
+ - Ilya Levin (ilyachase)
  - Hubert Moreau (hmoreau)
- - Brajk19
+ - Nicolas Appriou
  - Igor Timoshenko (igor.timoshenko)
+ - Pierre-Emmanuel CAPEL
  - Manuele Menozzi
  - “teerasak”
  - Anton Babenko (antonbabenko)
@@ -2115,6 +2125,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Arend-Jan Tetteroo
  - Albin Kerouaton
  - Sébastien HOUZÉ
+ - sebastian
  - Mbechezi Nawo
  - wivaku
  - Markus Reinhold
@@ -2355,6 +2366,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Alexander Janssen (tnajanssen)
  - Thomas Chmielowiec (chmielot)
  - Jānis Lukss
+ - simbera
  - Julien BERNARD
  - Michael Zangerle
  - rkerner
@@ -2545,6 +2557,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Wing
  - Thomas Bibb
  - Stefan Koopmanschap
+ - George Sparrow
  - Joni Halme
  - Matt Farmer
  - catch
@@ -2572,7 +2585,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Christoph König (chriskoenig)
  - Dmytro Pigin (dotty)
  - Jakub Janata (janatjak)
- - Jibé Barth (jibbarth)
  - Jm Aribau (jmaribau)
  - Matthew Foster (mfoster)
  - Paul Seiffert (seiffert)
@@ -2739,6 +2751,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Chris
  - Farid Jalilov
  - Christiaan Wiesenekker
+ - Ariful Alam
  - Florent Olivaud
  - Foxprodev
  - Eric Hertwig
@@ -2804,6 +2817,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Boudry Julien
  - amcastror
  - Bram Van der Sype (brammm)
+ - roman joly (eltharin)
  - Guile (guile)
  - Mark Beech (jaybizzle)
  - Julien Moulin (lizjulien)
@@ -2914,6 +2928,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - tomasz-kusy
  - Rémi Blaise
  - Nicolas Séverin
+ - patrickmaynard
  - Houssem
  - Joel Marcey
  - zolikonta
@@ -3001,6 +3016,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - zors1
  - Peter Simoncic
  - lerminou
+ - Adam Bramley
  - Ahmad El-Bardan
  - mantulo
  - pdragun
@@ -3045,6 +3061,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - robmro27
  - Vallel Blanco
  - Alexis MARQUIS
+ - Ernesto Domato
  - Matheus Gontijo
  - Gerrit Drost
  - Linnaea Von Lavia
@@ -3184,7 +3201,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Lars Moelleken
  - dasmfm
  - Claas Augner
- - Baptiste CONTRERAS
  - Mathias Geat
  - Angel Fernando Quiroz Campos (angelfqc)
  - Arnaud Buathier (arnapou)
@@ -3264,6 +3280,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - jamogon
  - Vyacheslav Slinko
  - Benjamin Laugueux
+ - guangwu
  - Lane Shukhov
  - Jakub Chábek
  - William Pinaud (DocFX)
@@ -3477,7 +3494,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Abdouni Karim (abdounikarim)
  - Temuri Takalandze (abgeo)
  - Bernard van der Esch (adeptofvoltron)
- - Adrian Günter (adrianguenter)
  - Andreas Forsblom (aforsblo)
  - Aleksejs Kovalovs (aleksejs1)
  - Alex Olmos (alexolmos)
@@ -3545,6 +3561,7 @@ The Symfony Connect username in parenthesis allows to get more information
  - Julien Manganne (juuuuuu)
  - Ismail Faizi (kanafghan)
  - Karolis Daužickas (kdauzickas)
+ - Kérian MONTES-MORIN (kerianmm)
  - Sébastien Armand (khepin)
  - Pierre-Chanel Gauthier (kmecnin)
  - Krzysztof Menżyk (krymen)
@@ -3588,13 +3605,13 @@ The Symfony Connect username in parenthesis allows to get more information
  - Sergey Stavichenko (sergey_stavichenko)
  - André Filipe Gonçalves Neves (seven)
  - Bruno Ziegler (sfcoder)
+ - Ángel Guzmán Maeso (shakaran)
  - Andrea Giuliano (shark)
  - Şəhriyar İmanov (shehriyari)
  - Thomas Baumgartner (shoplifter)
  - Schuyler Jager (sjager)
  - Christopher Georg (sky-chris)
  - Volker (skydiablo)
- - Francisco Alvarez (sormes)
  - Julien Sanchez (sumbobyboys)
  - Stephan Vierkant (svierkant)
  - Ron Gähler (t-ronx)
@@ -3618,7 +3635,6 @@ The Symfony Connect username in parenthesis allows to get more information
  - Konrad
  - Kovacs Nicolas
  - eminjk
- - Gálik Pál
  - craigmarvelley
  - Stano Turza
  - Antoine Leblanc
diff --git a/src/Symfony/Bridge/Doctrine/.gitattributes b/src/Symfony/Bridge/Doctrine/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/Doctrine/.gitattributes
+++ b/src/Symfony/Bridge/Doctrine/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/Doctrine/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/Doctrine/SchemaListener/AbstractSchemaListener.php b/src/Symfony/Bridge/Doctrine/SchemaListener/AbstractSchemaListener.php
index 04907ee9a78bd..7d286d782cc62 100644
--- a/src/Symfony/Bridge/Doctrine/SchemaListener/AbstractSchemaListener.php
+++ b/src/Symfony/Bridge/Doctrine/SchemaListener/AbstractSchemaListener.php
@@ -13,6 +13,8 @@
 
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Exception\TableNotFoundException;
+use Doctrine\DBAL\Schema\Table;
+use Doctrine\DBAL\Types\Types;
 use Doctrine\ORM\Tools\Event\GenerateSchemaEventArgs;
 
 abstract class AbstractSchemaListener
@@ -22,8 +24,16 @@ abstract public function postGenerateSchema(GenerateSchemaEventArgs $event): voi
     protected function getIsSameDatabaseChecker(Connection $connection): \Closure
     {
         return static function (\Closure $exec) use ($connection): bool {
+            $schemaManager = $connection->createSchemaManager();
+
             $checkTable = 'schema_subscriber_check_'.bin2hex(random_bytes(7));
-            $connection->executeStatement(sprintf('CREATE TABLE %s (id INTEGER NOT NULL)', $checkTable));
+            $table = new Table($checkTable);
+            $table->addColumn('id', Types::INTEGER)
+                ->setAutoincrement(true)
+                ->setNotnull(true);
+            $table->setPrimaryKey(['id']);
+
+            $schemaManager->createTable($table);
 
             try {
                 $exec(sprintf('DROP TABLE %s', $checkTable));
@@ -32,7 +42,7 @@ protected function getIsSameDatabaseChecker(Connection $connection): \Closure
             }
 
             try {
-                $connection->executeStatement(sprintf('DROP TABLE %s', $checkTable));
+                $schemaManager->dropTable($checkTable);
 
                 return false;
             } catch (TableNotFoundException) {
diff --git a/src/Symfony/Bridge/Monolog/.gitattributes b/src/Symfony/Bridge/Monolog/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/Monolog/.gitattributes
+++ b/src/Symfony/Bridge/Monolog/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/Monolog/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/Monolog/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/Monolog/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/Monolog/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/Monolog/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/Monolog/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/PhpUnit/.gitattributes b/src/Symfony/Bridge/PhpUnit/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/PhpUnit/.gitattributes
+++ b/src/Symfony/Bridge/PhpUnit/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/PhpUnit/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/PhpUnit/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/PhpUnit/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/PhpUnit/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/PhpUnit/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/PhpUnit/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/PsrHttpMessage/.gitattributes b/src/Symfony/Bridge/PsrHttpMessage/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/PsrHttpMessage/.gitattributes
+++ b/src/Symfony/Bridge/PsrHttpMessage/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/PsrHttpMessage/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/PsrHttpMessage/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/PsrHttpMessage/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/PsrHttpMessage/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/PsrHttpMessage/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/PsrHttpMessage/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/Twig/.gitattributes b/src/Symfony/Bridge/Twig/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bridge/Twig/.gitattributes
+++ b/src/Symfony/Bridge/Twig/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bridge/Twig/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bridge/Twig/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bridge/Twig/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bridge/Twig/.github/workflows/check-subtree-split.yml b/src/Symfony/Bridge/Twig/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bridge/Twig/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
index d0e3337a9239c..3449751b1ff92 100644
--- a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
+++ b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
@@ -23,12 +23,12 @@
 use Twig\Node\ModuleNode;
 use Twig\Node\Node;
 use Twig\Node\SetNode;
-use Twig\NodeVisitor\AbstractNodeVisitor;
+use Twig\NodeVisitor\NodeVisitorInterface;
 
 /**
  * @author Fabien Potencier <fabien@symfony.com>
  */
-final class TranslationDefaultDomainNodeVisitor extends AbstractNodeVisitor
+final class TranslationDefaultDomainNodeVisitor implements NodeVisitorInterface
 {
     private Scope $scope;
 
@@ -37,7 +37,7 @@ public function __construct()
         $this->scope = new Scope();
     }
 
-    protected function doEnterNode(Node $node, Environment $env): Node
+    public function enterNode(Node $node, Environment $env): Node
     {
         if ($node instanceof BlockNode || $node instanceof ModuleNode) {
             $this->scope = $this->scope->enter();
@@ -83,7 +83,7 @@ protected function doEnterNode(Node $node, Environment $env): Node
         return $node;
     }
 
-    protected function doLeaveNode(Node $node, Environment $env): ?Node
+    public function leaveNode(Node $node, Environment $env): ?Node
     {
         if ($node instanceof TransDefaultDomainNode) {
             return null;
diff --git a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
index 3a7ea67cac90b..c44a8894469f3 100644
--- a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
+++ b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
@@ -18,14 +18,14 @@
 use Twig\Node\Expression\FilterExpression;
 use Twig\Node\Expression\FunctionExpression;
 use Twig\Node\Node;
-use Twig\NodeVisitor\AbstractNodeVisitor;
+use Twig\NodeVisitor\NodeVisitorInterface;
 
 /**
  * TranslationNodeVisitor extracts translation messages.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-final class TranslationNodeVisitor extends AbstractNodeVisitor
+final class TranslationNodeVisitor implements NodeVisitorInterface
 {
     public const UNDEFINED_DOMAIN = '_undefined';
 
@@ -49,7 +49,7 @@ public function getMessages(): array
         return $this->messages;
     }
 
-    protected function doEnterNode(Node $node, Environment $env): Node
+    public function enterNode(Node $node, Environment $env): Node
     {
         if (!$this->enabled) {
             return $node;
@@ -98,7 +98,7 @@ protected function doEnterNode(Node $node, Environment $env): Node
         return $node;
     }
 
-    protected function doLeaveNode(Node $node, Environment $env): ?Node
+    public function leaveNode(Node $node, Environment $env): ?Node
     {
         return $node;
     }
diff --git a/src/Symfony/Bundle/DebugBundle/.gitattributes b/src/Symfony/Bundle/DebugBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/DebugBundle/.gitattributes
+++ b/src/Symfony/Bundle/DebugBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/DebugBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/DebugBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/DebugBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/DebugBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/DebugBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/DebugBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/FrameworkBundle/.gitattributes b/src/Symfony/Bundle/FrameworkBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/FrameworkBundle/.gitattributes
+++ b/src/Symfony/Bundle/FrameworkBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/FrameworkBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/FrameworkBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/FrameworkBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/FrameworkBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
index 179f8e981dd32..cdfc7f34f3730 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
@@ -200,7 +200,7 @@ private function isNfs(string $dir): bool
 
         if (null === $mounts) {
             $mounts = [];
-            if ('/' === \DIRECTORY_SEPARATOR && is_readable('/proc/mounts') && $files = @file('/proc/mounts')) {
+            if ('/' === \DIRECTORY_SEPARATOR && @is_readable('/proc/mounts') && $files = @file('/proc/mounts')) {
                 foreach ($files as $mount) {
                     $mount = \array_slice(explode(' ', $mount), 1, -3);
                     if (!\in_array(array_pop($mount), ['vboxsf', 'nfs'])) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
index 0c5a31ff7a326..3f5085ef2a7b4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
@@ -393,7 +393,7 @@ private function getCallableData(mixed $callable): array
             $data['type'] = 'closure';
 
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return $data;
             }
             $data['name'] = $r->name;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
index 69277fecc1148..7537e3d4228e7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
@@ -403,7 +403,7 @@ protected function describeCallable(mixed $callable, array $options = []): void
             $string .= "\n- Type: `closure`";
 
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 $this->write($string."\n");
 
                 return;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
index cbffb5fcd7495..60834250b3370 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
@@ -649,7 +649,7 @@ private function formatCallable(mixed $callable): string
 
         if ($callable instanceof \Closure) {
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return 'Closure()';
             }
             if ($class = $r->getClosureCalledClass()) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
index 672fb750b9480..05848b1b24f6c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
@@ -581,7 +581,7 @@ private function getCallableDocument(mixed $callable): \DOMDocument
             $callableXML->setAttribute('type', 'closure');
 
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return $dom;
             }
             $callableXML->setAttribute('name', $r->name);
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index 26f5c1c329665..0f44e66a707f3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -1481,7 +1481,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
         $defaultDir = $container->getParameterBag()->resolveValue($config['default_path']);
         foreach ($container->getParameter('kernel.bundles_metadata') as $name => $bundle) {
             if ($container->fileExists($dir = $bundle['path'].'/Resources/translations') || $container->fileExists($dir = $bundle['path'].'/translations')) {
-                $dirs[] = $dir;
+                $dirs[] = $transPaths[] = $dir;
             } else {
                 $nonExistingDirs[] = $dir;
             }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
index 73a7f6fe7e38a..f8c7460135112 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
@@ -214,7 +214,7 @@ public function loadRoutes(LoaderInterface $loader): RouteCollection
 
             if (\is_array($controller) && [0, 1] === array_keys($controller) && $this === $controller[0]) {
                 $route->setDefault('_controller', ['kernel', $controller[1]]);
-            } elseif ($controller instanceof \Closure && $this === ($r = new \ReflectionFunction($controller))->getClosureThis() && !str_contains($r->name, '{closure}')) {
+            } elseif ($controller instanceof \Closure && $this === ($r = new \ReflectionFunction($controller))->getClosureThis() && !str_contains($r->name, '{closure')) {
                 $route->setDefault('_controller', ['kernel', $r->name]);
             }
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php
index d46a92a02d585..bd3f863aa54b0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/serializer.php
@@ -115,7 +115,7 @@
 
         ->set('serializer.normalizer.translatable', TranslatableNormalizer::class)
             ->args(['$translator' => service('translator')])
-            ->tag('serializer.normalizer', ['priority' => -890])
+            ->tag('serializer.normalizer', ['priority' => -920])
 
         ->set('serializer.normalizer.form_error', FormErrorNormalizer::class)
             ->tag('serializer.normalizer', ['priority' => -915])
@@ -138,6 +138,8 @@
                 service('property_info')->ignoreOnInvalid(),
                 service('serializer.mapping.class_discriminator_resolver')->ignoreOnInvalid(),
                 null,
+                [],
+                service('property_info')->ignoreOnInvalid(),
             ])
 
         ->set('serializer.denormalizer.array', ArrayDenormalizer::class)
@@ -212,6 +214,6 @@
             ])
 
         ->set('serializer.normalizer.backed_enum', BackedEnumNormalizer::class)
-            ->tag('serializer.normalizer', ['priority' => -880])
+            ->tag('serializer.normalizer', ['priority' => -915])
     ;
 };
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTestCase.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTestCase.php
index eede5ded314c6..845056799d27a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTestCase.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTestCase.php
@@ -66,6 +66,7 @@
 use Symfony\Component\Serializer\Mapping\Loader\AttributeLoader;
 use Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader;
 use Symfony\Component\Serializer\Mapping\Loader\YamlFileLoader;
+use Symfony\Component\Serializer\Normalizer\BackedEnumNormalizer;
 use Symfony\Component\Serializer\Normalizer\ConstraintViolationListNormalizer;
 use Symfony\Component\Serializer\Normalizer\DataUriNormalizer;
 use Symfony\Component\Serializer\Normalizer\DateIntervalNormalizer;
@@ -1539,10 +1540,24 @@ public function testTranslatableNormalizerRegistered()
         $tag = $definition->getTag('serializer.normalizer');
 
         $this->assertSame(TranslatableNormalizer::class, $definition->getClass());
-        $this->assertSame(-890, $tag[0]['priority']);
+        $this->assertSame(-920, $tag[0]['priority']);
         $this->assertEquals(new Reference('translator'), $definition->getArgument('$translator'));
     }
 
+    /**
+     * @see https://github.com/symfony/symfony/issues/54478
+     */
+    public function testBackedEnumNormalizerRegistered()
+    {
+        $container = $this->createContainerFromFile('full');
+
+        $definition = $container->getDefinition('serializer.normalizer.backed_enum');
+        $tag = $definition->getTag('serializer.normalizer');
+
+        $this->assertSame(BackedEnumNormalizer::class, $definition->getClass());
+        $this->assertSame(-915, $tag[0]['priority']);
+    }
+
     public function testSerializerCacheActivated()
     {
         $container = $this->createContainerFromFile('serializer_enabled');
diff --git a/src/Symfony/Bundle/SecurityBundle/.gitattributes b/src/Symfony/Bundle/SecurityBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/SecurityBundle/.gitattributes
+++ b/src/Symfony/Bundle/SecurityBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/SecurityBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/SecurityBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/SecurityBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/SecurityBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php
index 14b913e391128..6afabfbec9b45 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/DebugFirewallCommand.php
@@ -238,7 +238,7 @@ private function formatCallable(mixed $callable): string
 
         if ($callable instanceof \Closure) {
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return 'Closure()';
             }
             if ($class = $r->getClosureCalledClass()) {
diff --git a/src/Symfony/Bundle/TwigBundle/.gitattributes b/src/Symfony/Bundle/TwigBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/TwigBundle/.gitattributes
+++ b/src/Symfony/Bundle/TwigBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/TwigBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/TwigBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/TwigBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/TwigBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/TwigBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/TwigBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/.gitattributes b/src/Symfony/Bundle/WebProfilerBundle/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/.gitattributes
+++ b/src/Symfony/Bundle/WebProfilerBundle/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Bundle/WebProfilerBundle/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Bundle/WebProfilerBundle/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Bundle/WebProfilerBundle/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Bundle/WebProfilerBundle/.github/workflows/check-subtree-split.yml b/src/Symfony/Bundle/WebProfilerBundle/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Bundle/WebProfilerBundle/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Asset/.gitattributes b/src/Symfony/Component/Asset/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Asset/.gitattributes
+++ b/src/Symfony/Component/Asset/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Asset/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Asset/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Asset/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Asset/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Asset/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Asset/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/AssetMapper/.gitattributes b/src/Symfony/Component/AssetMapper/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/AssetMapper/.gitattributes
+++ b/src/Symfony/Component/AssetMapper/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/AssetMapper/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/AssetMapper/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/AssetMapper/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/AssetMapper/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/AssetMapper/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/AssetMapper/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/AssetMapper/ImportMap/RemotePackageStorage.php b/src/Symfony/Component/AssetMapper/ImportMap/RemotePackageStorage.php
index f651033b6505e..b1c0cd5966b3d 100644
--- a/src/Symfony/Component/AssetMapper/ImportMap/RemotePackageStorage.php
+++ b/src/Symfony/Component/AssetMapper/ImportMap/RemotePackageStorage.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\AssetMapper\ImportMap;
 
+use Symfony\Component\AssetMapper\Exception\RuntimeException;
+
 /**
  * Manages the local storage of remote/vendor importmap packages.
  */
@@ -52,7 +54,9 @@ public function save(ImportMapEntry $entry, string $contents): void
         $vendorPath = $this->getDownloadPath($entry->packageModuleSpecifier, $entry->type);
 
         @mkdir(\dirname($vendorPath), 0777, true);
-        file_put_contents($vendorPath, $contents);
+        if (false === @file_put_contents($vendorPath, $contents)) {
+            throw new RuntimeException(error_get_last()['message'] ?? sprintf('Failed to write file "%s".', $vendorPath));
+        }
     }
 
     public function saveExtraFile(ImportMapEntry $entry, string $extraFilename, string $contents): void
@@ -64,7 +68,9 @@ public function saveExtraFile(ImportMapEntry $entry, string $extraFilename, stri
         $vendorPath = $this->getExtraFileDownloadPath($entry, $extraFilename);
 
         @mkdir(\dirname($vendorPath), 0777, true);
-        file_put_contents($vendorPath, $contents);
+        if (false === @file_put_contents($vendorPath, $contents)) {
+            throw new RuntimeException(error_get_last()['message'] ?? sprintf('Failed to write file "%s".', $vendorPath));
+        }
     }
 
     /**
diff --git a/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapManagerTest.php b/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapManagerTest.php
index 3198b11ee76a6..551a60492460d 100644
--- a/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapManagerTest.php
+++ b/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapManagerTest.php
@@ -201,15 +201,15 @@ public static function getRequirePackageTests(): iterable
         ];
 
         yield 'single_package_with_a_path' => [
-        'packages' => [new PackageRequireOptions('some/module', path: self::$writableRoot.'/assets/some_file.js')],
-        'expectedProviderPackageArgumentCount' => 0,
-        'resolvedPackages' => [],
-        'expectedImportMap' => [
-            'some/module' => [
-                // converted to relative path
-                'path' => './assets/some_file.js',
+            'packages' => [new PackageRequireOptions('some/module', path: self::$writableRoot.'/assets/some_file.js')],
+            'expectedProviderPackageArgumentCount' => 0,
+            'resolvedPackages' => [],
+            'expectedImportMap' => [
+                'some/module' => [
+                    // converted to relative path
+                    'path' => './assets/some_file.js',
+                ],
             ],
-        ],
         ];
     }
 
diff --git a/src/Symfony/Component/AssetMapper/Tests/ImportMap/RemotePackageStorageTest.php b/src/Symfony/Component/AssetMapper/Tests/ImportMap/RemotePackageStorageTest.php
index 4d41f4b61ce1f..0019f604cc8c5 100644
--- a/src/Symfony/Component/AssetMapper/Tests/ImportMap/RemotePackageStorageTest.php
+++ b/src/Symfony/Component/AssetMapper/Tests/ImportMap/RemotePackageStorageTest.php
@@ -25,7 +25,7 @@ class RemotePackageStorageTest extends TestCase
     protected function setUp(): void
     {
         $this->filesystem = new Filesystem();
-        if (!file_exists(self::$writableRoot)) {
+        if (!$this->filesystem->exists(self::$writableRoot)) {
             $this->filesystem->mkdir(self::$writableRoot);
         }
     }
@@ -41,14 +41,30 @@ public function testGetStorageDir()
         $this->assertSame(realpath(self::$writableRoot.'/assets/vendor'), realpath($storage->getStorageDir()));
     }
 
+    public function testSaveThrowsWhenVendorDirectoryIsNotWritable()
+    {
+        $this->filesystem->mkdir($vendorDir = self::$writableRoot.'/assets/acme/vendor');
+        $this->filesystem->chmod($vendorDir, 0555);
+
+        $storage = new RemotePackageStorage($vendorDir);
+        $entry = ImportMapEntry::createRemote('foo', ImportMapType::JS, '/does/not/matter', '1.0.0', 'module_specifier', false);
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('file_put_contents('.$vendorDir.'/module_specifier/module_specifier.index.js): Failed to open stream: No such file or directory');
+        $storage->save($entry, 'any content');
+
+        $this->filesystem->remove($vendorDir);
+    }
+
     public function testIsDownloaded()
     {
         $storage = new RemotePackageStorage(self::$writableRoot.'/assets/vendor');
         $entry = ImportMapEntry::createRemote('foo', ImportMapType::JS, '/does/not/matter', '1.0.0', 'module_specifier', false);
         $this->assertFalse($storage->isDownloaded($entry));
+
         $targetPath = self::$writableRoot.'/assets/vendor/module_specifier/module_specifier.index.js';
-        @mkdir(\dirname($targetPath), 0777, true);
-        file_put_contents($targetPath, 'any content');
+        $this->filesystem->mkdir(\dirname($targetPath));
+        $this->filesystem->dumpFile($targetPath, 'any content');
         $this->assertTrue($storage->isDownloaded($entry));
     }
 
@@ -57,9 +73,10 @@ public function testIsExtraFileDownloaded()
         $storage = new RemotePackageStorage(self::$writableRoot.'/assets/vendor');
         $entry = ImportMapEntry::createRemote('foo', ImportMapType::JS, '/does/not/matter', '1.0.0', 'module_specifier', false);
         $this->assertFalse($storage->isExtraFileDownloaded($entry, '/path/to/extra.woff'));
+
         $targetPath = self::$writableRoot.'/assets/vendor/module_specifier/path/to/extra.woff';
-        @mkdir(\dirname($targetPath), 0777, true);
-        file_put_contents($targetPath, 'any content');
+        $this->filesystem->mkdir(\dirname($targetPath));
+        $this->filesystem->dumpFile($targetPath, 'any content');
         $this->assertTrue($storage->isExtraFileDownloaded($entry, '/path/to/extra.woff'));
     }
 
@@ -92,7 +109,7 @@ public function testGetDownloadedPath(string $packageModuleSpecifier, ImportMapT
         $this->assertSame($expectedPath, $storage->getDownloadPath($packageModuleSpecifier, $importMapType));
     }
 
-    public static function getDownloadPathTests()
+    public static function getDownloadPathTests(): iterable
     {
         yield 'javascript bare package' => [
             'packageModuleSpecifier' => 'foo',
diff --git a/src/Symfony/Component/BrowserKit/.gitattributes b/src/Symfony/Component/BrowserKit/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/BrowserKit/.gitattributes
+++ b/src/Symfony/Component/BrowserKit/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/BrowserKit/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/BrowserKit/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/BrowserKit/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/BrowserKit/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/BrowserKit/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/BrowserKit/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Cache/.gitattributes b/src/Symfony/Component/Cache/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Cache/.gitattributes
+++ b/src/Symfony/Component/Cache/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Cache/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Cache/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Cache/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Cache/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Cache/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Cache/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Cache/Tests/Traits/RedisProxiesTest.php b/src/Symfony/Component/Cache/Tests/Traits/RedisProxiesTest.php
index 5c382fb89a71c..36f57f09a6605 100644
--- a/src/Symfony/Component/Cache/Tests/Traits/RedisProxiesTest.php
+++ b/src/Symfony/Component/Cache/Tests/Traits/RedisProxiesTest.php
@@ -19,15 +19,16 @@
 class RedisProxiesTest extends TestCase
 {
     /**
-     * @requires extension redis < 6
+     * @requires extension redis
      *
      * @testWith ["Redis"]
      *           ["RedisCluster"]
      */
-    public function testRedis5Proxy($class)
+    public function testRedisProxy($class)
     {
-        $proxy = file_get_contents(\dirname(__DIR__, 2)."/Traits/{$class}5Proxy.php");
-        $proxy = substr($proxy, 0, 4 + strpos($proxy, '[];'));
+        $version = version_compare(phpversion('redis'), '6', '>') ? '6' : '5';
+        $proxy = file_get_contents(\dirname(__DIR__, 2)."/Traits/{$class}{$version}Proxy.php");
+        $expected = substr($proxy, 0, 4 + strpos($proxy, '[];'));
         $methods = [];
 
         foreach ((new \ReflectionClass($class))->getMethods() as $method) {
@@ -44,9 +45,13 @@ public function testRedis5Proxy($class)
         }
 
         uksort($methods, 'strnatcmp');
-        $proxy .= implode('', $methods)."}\n";
+        $expected .= implode('', $methods)."}\n";
+
+        if (!str_contains($expected, '#[\SensitiveParameter] ')) {
+            $proxy = str_replace('#[\SensitiveParameter] ', '', $proxy);
+        }
 
-        $this->assertStringEqualsFile(\dirname(__DIR__, 2)."/Traits/{$class}5Proxy.php", $proxy);
+        $this->assertSame($expected, $proxy);
     }
 
     /**
@@ -76,50 +81,4 @@ public function testRelayProxy()
 
         $this->assertStringEqualsFile(\dirname(__DIR__, 2).'/Traits/RelayProxy.php', $proxy);
     }
-
-    /**
-     * @requires extension openssl
-     *
-     * @testWith ["Redis", "redis"]
-     *           ["RedisCluster", "redis_cluster"]
-     */
-    public function testRedis6Proxy($class, $stub)
-    {
-        if (version_compare(phpversion('redis'), '6.0.2', '>')) {
-            $stub = file_get_contents("https://raw.githubusercontent.com/phpredis/phpredis/develop/{$stub}.stub.php");
-        } else {
-            $stub = file_get_contents("https://raw.githubusercontent.com/phpredis/phpredis/6.0.2/{$stub}.stub.php");
-        }
-
-        $stub = preg_replace('/^class /m', 'return; \0', $stub);
-        $stub = preg_replace('/^return; class ([a-zA-Z]++)/m', 'interface \1StubInterface', $stub, 1);
-        $stub = preg_replace('/^    public const .*/m', '', $stub);
-        eval(substr($stub, 5));
-
-        $this->assertEquals(self::dumpMethods(new \ReflectionClass($class.'StubInterface')), self::dumpMethods(new \ReflectionClass(sprintf('Symfony\Component\Cache\Traits\%s6Proxy', $class))));
-    }
-
-    private static function dumpMethods(\ReflectionClass $class): string
-    {
-        $methods = [];
-
-        foreach ($class->getMethods() as $method) {
-            if ('reset' === $method->name || method_exists(LazyProxyTrait::class, $method->name)) {
-                continue;
-            }
-
-            $return = $method->getReturnType() instanceof \ReflectionNamedType && 'void' === (string) $method->getReturnType() ? '' : 'return ';
-            $signature = ProxyHelper::exportSignature($method, false, $args);
-            $methods[] = "\n    ".str_replace('timeout = 0.0', 'timeout = 0', $signature)."\n".<<<EOPHP
-                {
-                    {$return}(\$this->lazyObjectState->realInstance ??= (\$this->lazyObjectState->initializer)())->{$method->name}({$args});
-                }
-
-            EOPHP;
-        }
-
-        usort($methods, 'strnatcmp');
-
-        return implode("\n", $methods);
-    }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php b/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php
index 2d0348c72a0c3..04665608c8f7f 100644
--- a/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php
+++ b/src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php
@@ -31,7 +31,9 @@ public function testCreateConnection(string $dsn, string $expectedClass)
             self::markTestSkipped('REDIS_CLUSTER_HOSTS env var is not defined.');
         }
 
-        $mock = self::getObjectForTrait(RedisTrait::class);
+        $mock = new class () {
+            use RedisTrait;
+        };
         $connection = $mock::createConnection($dsn);
 
         self::assertInstanceOf($expectedClass, $connection);
@@ -43,7 +45,9 @@ public function testUrlDecodeParameters()
             self::markTestSkipped('REDIS_AUTHENTICATED_HOST env var is not defined.');
         }
 
-        $mock = self::getObjectForTrait(RedisTrait::class);
+        $mock = new class () {
+            use RedisTrait;
+        };
         $connection = $mock::createConnection('redis://:p%40ssword@'.getenv('REDIS_AUTHENTICATED_HOST'));
 
         self::assertInstanceOf(\Redis::class, $connection);
@@ -73,4 +77,59 @@ public static function provideCreateConnection(): array
             ],
         ];
     }
+
+    /**
+     * Due to a bug in phpredis, the persistent connection will keep its last selected database. So when re-using
+     * a persistent connection, the database has to be re-selected, too.
+     *
+     * @see https://github.com/phpredis/phpredis/issues/1920
+     *
+     * @group integration
+     */
+    public function testPconnectSelectsCorrectDatabase()
+    {
+        if (!class_exists(\Redis::class)) {
+            throw new SkippedTestSuiteError('The "Redis" class is required.');
+        }
+        if (!getenv('REDIS_HOST')) {
+            throw new SkippedTestSuiteError('REDIS_HOST env var is not defined.');
+        }
+        if (!\ini_get('redis.pconnect.pooling_enabled')) {
+            throw new SkippedTestSuiteError('The bug only occurs when pooling is enabled.');
+        }
+
+        // Limit the connection pool size to 1:
+        if (false === $prevPoolSize = ini_set('redis.pconnect.connection_limit', 1)) {
+            throw new SkippedTestSuiteError('Unable to set pool size');
+        }
+
+        try {
+            $mock = new class () {
+                use RedisTrait;
+            };
+
+            $dsn = 'redis://'.getenv('REDIS_HOST');
+
+            $cacheKey = 'testPconnectSelectsCorrectDatabase';
+            $cacheValueOnDb1 = 'I should only be on database 1';
+
+            // First connect to database 1 and set a value there so we can identify this database:
+            $db1 = $mock::createConnection($dsn, ['dbindex' => 1, 'persistent' => 1]);
+            self::assertInstanceOf(\Redis::class, $db1);
+            self::assertSame(1, $db1->getDbNum());
+            $db1->set($cacheKey, $cacheValueOnDb1);
+            self::assertSame($cacheValueOnDb1, $db1->get($cacheKey));
+
+            // Unset the connection - do not use `close()` or we will lose the persistent connection:
+            unset($db1);
+
+            // Now connect to database 0 and see that we do not actually ended up on database 1 by checking the value:
+            $db0 = $mock::createConnection($dsn, ['dbindex' => 0, 'persistent' => 1]);
+            self::assertInstanceOf(\Redis::class, $db0);
+            self::assertSame(0, $db0->getDbNum()); // Redis is lying here! We could actually be on any database!
+            self::assertNotSame($cacheValueOnDb1, $db0->get($cacheKey)); // This value should not exist if we are actually on db 0
+        } finally {
+            ini_set('redis.pconnect.connection_limit', $prevPoolSize);
+        }
+    }
 }
diff --git a/src/Symfony/Component/Cache/Traits/Redis5Proxy.php b/src/Symfony/Component/Cache/Traits/Redis5Proxy.php
index 06130cc33b9cc..0b2794ee18b46 100644
--- a/src/Symfony/Component/Cache/Traits/Redis5Proxy.php
+++ b/src/Symfony/Component/Cache/Traits/Redis5Proxy.php
@@ -81,7 +81,7 @@ public function append($key, $value)
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->append(...\func_get_args());
     }
 
-    public function auth($auth)
+    public function auth(#[\SensitiveParameter] $auth)
     {
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->auth(...\func_get_args());
     }
diff --git a/src/Symfony/Component/Cache/Traits/Redis6Proxy.php b/src/Symfony/Component/Cache/Traits/Redis6Proxy.php
index e41c0d10cc030..0680404fc1eee 100644
--- a/src/Symfony/Component/Cache/Traits/Redis6Proxy.php
+++ b/src/Symfony/Component/Cache/Traits/Redis6Proxy.php
@@ -28,7 +28,6 @@ class Redis6Proxy extends \Redis implements ResetInterface, LazyObjectInterface
     use LazyProxyTrait {
         resetLazyObject as reset;
     }
-    use Redis6ProxyTrait;
 
     private const LAZY_OBJECT_PROPERTY_SCOPES = [];
 
@@ -227,6 +226,11 @@ public function discard(): \Redis|bool
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->discard(...\func_get_args());
     }
 
+    public function dump($key): \Redis|string
+    {
+        return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->dump(...\func_get_args());
+    }
+
     public function echo($str): \Redis|false|string
     {
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->echo(...\func_get_args());
@@ -647,6 +651,11 @@ public function ltrim($key, $start, $end): \Redis|bool
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->ltrim(...\func_get_args());
     }
 
+    public function mget($keys): \Redis|array
+    {
+        return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->mget(...\func_get_args());
+    }
+
     public function migrate($host, $port, $key, $dstdb, $timeout, $copy = false, $replace = false, #[\SensitiveParameter] $credentials = null): \Redis|bool
     {
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->migrate(...\func_get_args());
diff --git a/src/Symfony/Component/Cache/Traits/Redis6ProxyTrait.php b/src/Symfony/Component/Cache/Traits/Redis6ProxyTrait.php
deleted file mode 100644
index d086d5b3e8a09..0000000000000
--- a/src/Symfony/Component/Cache/Traits/Redis6ProxyTrait.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Cache\Traits;
-
-if (version_compare(phpversion('redis'), '6.0.2', '>')) {
-    /**
-     * @internal
-     */
-    trait Redis6ProxyTrait
-    {
-        public function dump($key): \Redis|false|string
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->dump(...\func_get_args());
-        }
-
-        public function mget($keys): \Redis|array|false
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->mget(...\func_get_args());
-        }
-
-        public function waitaof($numlocal, $numreplicas, $timeout): \Redis|array|false
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->waitaof(...\func_get_args());
-        }
-    }
-} else {
-    /**
-     * @internal
-     */
-    trait Redis6ProxyTrait
-    {
-        public function dump($key): \Redis|string
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->dump(...\func_get_args());
-        }
-
-        public function mget($keys): \Redis|array
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->mget(...\func_get_args());
-        }
-    }
-}
diff --git a/src/Symfony/Component/Cache/Traits/RedisCluster5Proxy.php b/src/Symfony/Component/Cache/Traits/RedisCluster5Proxy.php
index da23e0f881e1b..511c53dd718a3 100644
--- a/src/Symfony/Component/Cache/Traits/RedisCluster5Proxy.php
+++ b/src/Symfony/Component/Cache/Traits/RedisCluster5Proxy.php
@@ -31,7 +31,7 @@ class RedisCluster5Proxy extends \RedisCluster implements ResetInterface, LazyOb
 
     private const LAZY_OBJECT_PROPERTY_SCOPES = [];
 
-    public function __construct($name, $seeds = null, $timeout = null, $read_timeout = null, $persistent = null, $auth = null)
+    public function __construct($name, $seeds = null, $timeout = null, $read_timeout = null, $persistent = null, #[\SensitiveParameter] $auth = null)
     {
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->__construct(...\func_get_args());
     }
diff --git a/src/Symfony/Component/Cache/Traits/RedisCluster6Proxy.php b/src/Symfony/Component/Cache/Traits/RedisCluster6Proxy.php
index 6e06b075f27d7..fafc4acf2df06 100644
--- a/src/Symfony/Component/Cache/Traits/RedisCluster6Proxy.php
+++ b/src/Symfony/Component/Cache/Traits/RedisCluster6Proxy.php
@@ -28,7 +28,6 @@ class RedisCluster6Proxy extends \RedisCluster implements ResetInterface, LazyOb
     use LazyProxyTrait {
         resetLazyObject as reset;
     }
-    use RedisCluster6ProxyTrait;
 
     private const LAZY_OBJECT_PROPERTY_SCOPES = [];
 
@@ -657,6 +656,11 @@ public function pttl($key): \RedisCluster|false|int
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->pttl(...\func_get_args());
     }
 
+    public function publish($channel, $message): \RedisCluster|bool
+    {
+        return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->publish(...\func_get_args());
+    }
+
     public function pubsub($key_or_address, ...$values): mixed
     {
         return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->pubsub(...\func_get_args());
diff --git a/src/Symfony/Component/Cache/Traits/RedisCluster6ProxyTrait.php b/src/Symfony/Component/Cache/Traits/RedisCluster6ProxyTrait.php
deleted file mode 100644
index 389c6e1adf347..0000000000000
--- a/src/Symfony/Component/Cache/Traits/RedisCluster6ProxyTrait.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Cache\Traits;
-
-if (version_compare(phpversion('redis'), '6.0.2', '>')) {
-    /**
-     * @internal
-     */
-    trait RedisCluster6ProxyTrait
-    {
-        public function publish($channel, $message): \RedisCluster|bool|int
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->publish(...\func_get_args());
-        }
-
-        public function waitaof($key_or_address, $numlocal, $numreplicas, $timeout): \RedisCluster|array|false
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->waitaof(...\func_get_args());
-        }
-    }
-} else {
-    /**
-     * @internal
-     */
-    trait RedisCluster6ProxyTrait
-    {
-        public function publish($channel, $message): \RedisCluster|bool
-        {
-            return ($this->lazyObjectState->realInstance ??= ($this->lazyObjectState->initializer)())->publish(...\func_get_args());
-        }
-    }
-}
diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index 032a290c72dbe..7209e9ebadeaf 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -293,7 +293,10 @@ public static function createConnection(#[\SensitiveParameter] string $dsn, arra
                     }
 
                     if ((null !== $auth && !$redis->auth($auth))
-                        || ($params['dbindex'] && !$redis->select($params['dbindex']))
+                        // Due to a bug in phpredis we must always select the dbindex if persistent pooling is enabled
+                        // @see https://github.com/phpredis/phpredis/issues/1920
+                        // @see https://github.com/symfony/symfony/issues/51578
+                        || (($params['dbindex'] || ('pconnect' === $connect && '0' !== \ini_get('redis.pconnect.pooling_enabled'))) && !$redis->select($params['dbindex']))
                     ) {
                         $e = preg_replace('/^ERR /', '', $redis->getLastError());
                         throw new InvalidArgumentException('Redis connection failed: '.$e.'.');
diff --git a/src/Symfony/Component/Clock/.gitattributes b/src/Symfony/Component/Clock/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Clock/.gitattributes
+++ b/src/Symfony/Component/Clock/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Clock/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Clock/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Clock/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Clock/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Clock/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Clock/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Clock/DatePoint.php b/src/Symfony/Component/Clock/DatePoint.php
index 5d8ace6374bc8..5623e3b8702d9 100644
--- a/src/Symfony/Component/Clock/DatePoint.php
+++ b/src/Symfony/Component/Clock/DatePoint.php
@@ -32,15 +32,21 @@ public function __construct(string $datetime = 'now', ?\DateTimeZone $timezone =
 
             if (\PHP_VERSION_ID < 80300) {
                 try {
-                    $timezone = (new parent($datetime, $timezone ?? $now->getTimezone()))->getTimezone();
+                    $builtInDate = new parent($datetime, $timezone ?? $now->getTimezone());
+                    $timezone = $builtInDate->getTimezone();
                 } catch (\Exception $e) {
                     throw new \DateMalformedStringException($e->getMessage(), $e->getCode(), $e);
                 }
             } else {
-                $timezone = (new parent($datetime, $timezone ?? $now->getTimezone()))->getTimezone();
+                $builtInDate = new parent($datetime, $timezone ?? $now->getTimezone());
+                $timezone = $builtInDate->getTimezone();
             }
 
             $now = $now->setTimezone($timezone)->modify($datetime);
+
+            if ('00:00:00.000000' === $builtInDate->format('H:i:s.u')) {
+                $now = $now->setTime(0, 0);
+            }
         } elseif (null !== $timezone) {
             $now = $now->setTimezone($timezone);
         }
diff --git a/src/Symfony/Component/Clock/Tests/DatePointTest.php b/src/Symfony/Component/Clock/Tests/DatePointTest.php
index c9d7ddf10a803..191c1195465de 100644
--- a/src/Symfony/Component/Clock/Tests/DatePointTest.php
+++ b/src/Symfony/Component/Clock/Tests/DatePointTest.php
@@ -57,4 +57,19 @@ public function testModify()
         $this->expectExceptionMessage('Failed to parse time string (Bad Date)');
         $date->modify('Bad Date');
     }
+
+    /**
+     * @testWith ["2024-04-01 00:00:00.000000", "2024-04"]
+     *           ["2024-04-09 00:00:00.000000", "2024-04-09"]
+     *           ["2024-04-09 03:00:00.000000", "2024-04-09 03:00"]
+     *           ["2024-04-09 00:00:00.123456", "2024-04-09 00:00:00.123456"]
+     */
+    public function testTimeDefaultsToMidnight(string $expected, string $datetime)
+    {
+        $date = new \DateTimeImmutable($datetime);
+        $this->assertSame($expected, $date->format('Y-m-d H:i:s.u'));
+
+        $date = new DatePoint($datetime);
+        $this->assertSame($expected, $date->format('Y-m-d H:i:s.u'));
+    }
 }
diff --git a/src/Symfony/Component/Config/.gitattributes b/src/Symfony/Component/Config/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Config/.gitattributes
+++ b/src/Symfony/Component/Config/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Config/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Config/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Config/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Config/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Config/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Config/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Console/.gitattributes b/src/Symfony/Component/Console/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Console/.gitattributes
+++ b/src/Symfony/Component/Console/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Console/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Console/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Console/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Console/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Console/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Console/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
index 4dff078ae72dd..a5a0eca245080 100644
--- a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
@@ -1267,4 +1267,11 @@ public function testMultiLineFormatIsFullyCorrectlyWithManuallyCleanup()
             stream_get_contents($output->getStream())
         );
     }
+
+    public function testGetNotSetMessage()
+    {
+        $progressBar = new ProgressBar($this->getOutputStream());
+
+        $this->assertNull($progressBar->getMessage());
+    }
 }
diff --git a/src/Symfony/Component/CssSelector/.gitattributes b/src/Symfony/Component/CssSelector/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/CssSelector/.gitattributes
+++ b/src/Symfony/Component/CssSelector/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/CssSelector/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/CssSelector/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/CssSelector/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/CssSelector/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/CssSelector/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/CssSelector/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/DependencyInjection/.gitattributes b/src/Symfony/Component/DependencyInjection/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/DependencyInjection/.gitattributes
+++ b/src/Symfony/Component/DependencyInjection/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/DependencyInjection/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/DependencyInjection/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/DependencyInjection/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/DependencyInjection/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/DomCrawler/.gitattributes b/src/Symfony/Component/DomCrawler/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/DomCrawler/.gitattributes
+++ b/src/Symfony/Component/DomCrawler/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/DomCrawler/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/DomCrawler/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/DomCrawler/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/DomCrawler/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/DomCrawler/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/DomCrawler/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index 85d9c1eb36c7e..98829d4aaa49f 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -1061,12 +1061,30 @@ protected function sibling(\DOMNode $node, string $siblingDir = 'nextSibling'):
 
     private function parseHtml5(string $htmlContent, string $charset = 'UTF-8'): \DOMDocument
     {
-        return $this->html5Parser->parse($this->convertToHtmlEntities($htmlContent, $charset));
+        if (!$this->supportsEncoding($charset)) {
+            $htmlContent = $this->convertToHtmlEntities($htmlContent, $charset);
+            $charset = 'UTF-8';
+        }
+
+        return $this->html5Parser->parse($htmlContent, ['encoding' => $charset]);
+    }
+
+    private function supportsEncoding(string $encoding): bool
+    {
+        try {
+            return '' === @mb_convert_encoding('', $encoding, 'UTF-8');
+        } catch (\Throwable $e) {
+            return false;
+        }
     }
 
     private function parseXhtml(string $htmlContent, string $charset = 'UTF-8'): \DOMDocument
     {
-        $htmlContent = $this->convertToHtmlEntities($htmlContent, $charset);
+        if ('UTF-8' === $charset && preg_match('//u', $htmlContent)) {
+            $htmlContent = '<?xml encoding="UTF-8">'.$htmlContent;
+        } else {
+            $htmlContent = $this->convertToHtmlEntities($htmlContent, $charset);
+        }
 
         $internalErrors = libxml_use_internal_errors(true);
 
diff --git a/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php b/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php
index 90c97e7452ce7..97b16b9fe6073 100644
--- a/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php
+++ b/src/Symfony/Component/DomCrawler/Tests/AbstractCrawlerTestCase.php
@@ -184,6 +184,10 @@ public function testAddContent()
         $crawler = $this->createCrawler();
         $crawler->addContent($this->getDoctype().'<html><meta http-equiv="Content-Type" content="text/html; charset=unicode" /><div class="foo"></html></html>');
         $this->assertEquals('foo', $crawler->filterXPath('//div')->attr('class'), '->addContent() ignores bad charset');
+
+        $crawler = $this->createCrawler();
+        $crawler->addContent($this->getDoctype().'<html><script>var foo = "bär";</script></html>', 'text/html; charset=UTF-8');
+        $this->assertEquals('var foo = "bär";', $crawler->filterXPath('//script')->text(), '->addContent() does not interfere with script content');
     }
 
     /**
diff --git a/src/Symfony/Component/Dotenv/.gitattributes b/src/Symfony/Component/Dotenv/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Dotenv/.gitattributes
+++ b/src/Symfony/Component/Dotenv/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Dotenv/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Dotenv/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Dotenv/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Dotenv/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Dotenv/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Dotenv/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/ErrorHandler/.gitattributes b/src/Symfony/Component/ErrorHandler/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/ErrorHandler/.gitattributes
+++ b/src/Symfony/Component/ErrorHandler/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/ErrorHandler/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/ErrorHandler/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/ErrorHandler/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/ErrorHandler/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/ErrorHandler/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/ErrorHandler/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php b/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php
index 2e13fc40e71b7..e6d3e7d5b95a5 100644
--- a/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php
+++ b/src/Symfony/Component/ErrorHandler/Tests/ErrorHandlerTest.php
@@ -161,7 +161,7 @@ public function testCallErrorExceptionInfo()
             $this->assertSame('Undefined variable $foo', $e->getMessage());
             $this->assertSame(__FILE__, $e->getFile());
             $this->assertSame(0, $e->getCode());
-            $this->assertSame('Symfony\Component\ErrorHandler\{closure}', $trace[0]['function']);
+            $this->assertStringMatchesFormat('%A{closure%A}', $trace[0]['function']);
             $this->assertSame(ErrorHandler::class, $trace[0]['class']);
             $this->assertSame('triggerNotice', $trace[1]['function']);
             $this->assertSame(__CLASS__, $trace[1]['class']);
diff --git a/src/Symfony/Component/EventDispatcher/.gitattributes b/src/Symfony/Component/EventDispatcher/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/EventDispatcher/.gitattributes
+++ b/src/Symfony/Component/EventDispatcher/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/EventDispatcher/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/EventDispatcher/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/EventDispatcher/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php b/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
index 240d1d296f2de..c8c6af8cebfbf 100644
--- a/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
+++ b/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
@@ -48,7 +48,7 @@ public function __construct(callable|array $listener, ?string $name, Stopwatch $
             $this->callableRef .= '::'.$listener[1];
         } elseif ($listener instanceof \Closure) {
             $r = new \ReflectionFunction($listener);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 $this->pretty = $this->name = 'closure';
             } elseif ($class = $r->getClosureCalledClass()) {
                 $this->name = $class->name;
diff --git a/src/Symfony/Component/ExpressionLanguage/.gitattributes b/src/Symfony/Component/ExpressionLanguage/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/ExpressionLanguage/.gitattributes
+++ b/src/Symfony/Component/ExpressionLanguage/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/ExpressionLanguage/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/ExpressionLanguage/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/ExpressionLanguage/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/ExpressionLanguage/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/ExpressionLanguage/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/ExpressionLanguage/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Filesystem/.gitattributes b/src/Symfony/Component/Filesystem/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Filesystem/.gitattributes
+++ b/src/Symfony/Component/Filesystem/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Filesystem/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Filesystem/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Filesystem/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Filesystem/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Filesystem/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Filesystem/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 176535d13c267..af25dce4bba52 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -662,7 +662,7 @@ public function dumpFile(string $filename, $content): void
                 throw new IOException(sprintf('Failed to write file "%s": ', $filename).self::$lastError, 0, null, $filename);
             }
 
-            self::box('chmod', $tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask());
+            self::box('chmod', $tmpFile, @fileperms($filename) ?: 0666 & ~umask());
 
             $this->rename($tmpFile, $filename, true);
         } finally {
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index 2c222fd06b2db..bc8a5cecaa259 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -14,6 +14,8 @@
 use Symfony\Component\Filesystem\Exception\InvalidArgumentException;
 use Symfony\Component\Filesystem\Exception\IOException;
 use Symfony\Component\Filesystem\Path;
+use Symfony\Component\Process\PhpExecutableFinder;
+use Symfony\Component\Process\Process;
 
 /**
  * Test class for Filesystem.
@@ -162,23 +164,32 @@ public function testCopyCreatesTargetDirectoryIfItDoesNotExist()
         $this->assertStringEqualsFile($targetFilePath, 'SOURCE FILE');
     }
 
-    /**
-     * @group network
-     */
     public function testCopyForOriginUrlsAndExistingLocalFileDefaultsToCopy()
     {
-        if (!\in_array('https', stream_get_wrappers())) {
-            $this->markTestSkipped('"https" stream wrapper is not enabled.');
+        if (!\in_array('http', stream_get_wrappers())) {
+            $this->markTestSkipped('"http" stream wrapper is not enabled.');
         }
-        $sourceFilePath = 'https://symfony.com/images/common/logo/logo_symfony_header.png';
-        $targetFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_target_file';
 
-        file_put_contents($targetFilePath, 'TARGET FILE');
+        $finder = new PhpExecutableFinder();
+        $process = new Process(array_merge([$finder->find(false)], $finder->findArguments(), ['-dopcache.enable=0', '-dvariables_order=EGPCS', '-S', 'localhost:8057']));
+        $process->setWorkingDirectory(__DIR__.'/Fixtures/web');
 
-        $this->filesystem->copy($sourceFilePath, $targetFilePath, false);
+        $process->start();
 
-        $this->assertFileExists($targetFilePath);
-        $this->assertEquals(file_get_contents($sourceFilePath), file_get_contents($targetFilePath));
+        do {
+            usleep(50000);
+        } while (!@fopen('http://localhost:8057', 'r'));
+
+        try {
+            $sourceFilePath = 'http://localhost:8057/logo_symfony_header.png';
+            $targetFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_target_file';
+            file_put_contents($targetFilePath, 'TARGET FILE');
+            $this->filesystem->copy($sourceFilePath, $targetFilePath, false);
+            $this->assertFileExists($targetFilePath);
+            $this->assertEquals(file_get_contents($sourceFilePath), file_get_contents($targetFilePath));
+        } finally {
+            $process->stop();
+        }
     }
 
     public function testMkdirCreatesDirectoriesRecursively()
diff --git a/src/Symfony/Component/Filesystem/Tests/Fixtures/web/index.php b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/index.php
new file mode 100644
index 0000000000000..b3d9bbc7f3711
--- /dev/null
+++ b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/index.php
@@ -0,0 +1 @@
+<?php
diff --git a/src/Symfony/Component/Filesystem/Tests/Fixtures/web/logo_symfony_header.png b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/logo_symfony_header.png
new file mode 100644
index 0000000000000..519ab7c691ba9
Binary files /dev/null and b/src/Symfony/Component/Filesystem/Tests/Fixtures/web/logo_symfony_header.png differ
diff --git a/src/Symfony/Component/Filesystem/composer.json b/src/Symfony/Component/Filesystem/composer.json
index 1e054b682a023..883a34df3048c 100644
--- a/src/Symfony/Component/Filesystem/composer.json
+++ b/src/Symfony/Component/Filesystem/composer.json
@@ -18,7 +18,8 @@
     "require": {
         "php": ">=8.2",
         "symfony/polyfill-ctype": "~1.8",
-        "symfony/polyfill-mbstring": "~1.8"
+        "symfony/polyfill-mbstring": "~1.8",
+        "symfony/process": "^6.4|^7.0"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Filesystem\\": "" },
diff --git a/src/Symfony/Component/Finder/.gitattributes b/src/Symfony/Component/Finder/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Finder/.gitattributes
+++ b/src/Symfony/Component/Finder/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Finder/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Finder/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Finder/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Finder/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Finder/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Finder/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Finder/Iterator/VcsIgnoredFilterIterator.php b/src/Symfony/Component/Finder/Iterator/VcsIgnoredFilterIterator.php
index ddd7007728a7f..b278706e9f340 100644
--- a/src/Symfony/Component/Finder/Iterator/VcsIgnoredFilterIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/VcsIgnoredFilterIterator.php
@@ -37,9 +37,9 @@ public function __construct(\Iterator $iterator, string $baseDir)
     {
         $this->baseDir = $this->normalizePath($baseDir);
 
-        foreach ($this->parentDirectoriesUpwards($this->baseDir) as $parentDirectory) {
-            if (@is_dir("{$parentDirectory}/.git")) {
-                $this->baseDir = $parentDirectory;
+        foreach ([$this->baseDir, ...$this->parentDirectoriesUpwards($this->baseDir)] as $directory) {
+            if (@is_dir("{$directory}/.git")) {
+                $this->baseDir = $directory;
                 break;
             }
         }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/VcsIgnoredFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/VcsIgnoredFilterIteratorTest.php
index 3ebe481f559c5..f725374d815e7 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/VcsIgnoredFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/VcsIgnoredFilterIteratorTest.php
@@ -34,7 +34,7 @@ protected function tearDown(): void
      *
      * @dataProvider getAcceptData
      */
-    public function testAccept(array $gitIgnoreFiles, array $otherFileNames, array $expectedResult)
+    public function testAccept(array $gitIgnoreFiles, array $otherFileNames, array $expectedResult, string $baseDir = '')
     {
         $otherFileNames = $this->toAbsolute($otherFileNames);
         foreach ($otherFileNames as $path) {
@@ -51,7 +51,8 @@ public function testAccept(array $gitIgnoreFiles, array $otherFileNames, array $
 
         $inner = new InnerNameIterator($otherFileNames);
 
-        $iterator = new VcsIgnoredFilterIterator($inner, $this->tmpDir);
+        $baseDir = $this->tmpDir.('' !== $baseDir ? '/'.$baseDir : '');
+        $iterator = new VcsIgnoredFilterIterator($inner, $baseDir);
 
         $this->assertIterator($this->toAbsolute($expectedResult), $iterator);
     }
@@ -74,6 +75,55 @@ public static function getAcceptData(): iterable
             ],
         ];
 
+        yield 'simple file - .gitignore and in() from repository root' => [
+            [
+                '.gitignore' => 'a.txt',
+            ],
+            [
+                '.git',
+                'a.txt',
+                'b.txt',
+                'dir/',
+                'dir/a.txt',
+            ],
+            [
+                '.git',
+                'b.txt',
+                'dir',
+            ],
+        ];
+
+        yield 'nested git repositories only consider .gitignore files of the most inner repository' => [
+            [
+                '.gitignore' => "nested/*\na.txt",
+                'nested/.gitignore' => 'c.txt',
+                'nested/dir/.gitignore' => 'f.txt',
+            ],
+            [
+                '.git',
+                'a.txt',
+                'b.txt',
+                'nested/',
+                'nested/.git',
+                'nested/c.txt',
+                'nested/d.txt',
+                'nested/dir/',
+                'nested/dir/e.txt',
+                'nested/dir/f.txt',
+            ],
+            [
+                '.git',
+                'a.txt',
+                'b.txt',
+                'nested',
+                'nested/.git',
+                'nested/d.txt',
+                'nested/dir',
+                'nested/dir/e.txt',
+            ],
+            'nested',
+        ];
+
         yield 'simple file at root' => [
             [
                 '.gitignore' => '/a.txt',
diff --git a/src/Symfony/Component/Form/.gitattributes b/src/Symfony/Component/Form/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Form/.gitattributes
+++ b/src/Symfony/Component/Form/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Form/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Form/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Form/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Form/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Form/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Form/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php b/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php
index c845c10f6d89a..f5c25dfc1c221 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataAccessor/PropertyPathAccessor.php
@@ -12,7 +12,9 @@
 namespace Symfony\Component\Form\Extension\Core\DataAccessor;
 
 use Symfony\Component\Form\DataAccessorInterface;
+use Symfony\Component\Form\DataMapperInterface;
 use Symfony\Component\Form\Exception\AccessException;
+use Symfony\Component\Form\Extension\Core\DataMapper\DataMapper;
 use Symfony\Component\Form\FormInterface;
 use Symfony\Component\PropertyAccess\Exception\AccessException as PropertyAccessException;
 use Symfony\Component\PropertyAccess\Exception\NoSuchIndexException;
@@ -51,15 +53,25 @@ public function setValue(object|array &$data, mixed $value, FormInterface $form)
             throw new AccessException('Unable to write the given value as no property path is defined.');
         }
 
+        $getValue = function () use ($data, $form, $propertyPath) {
+            $dataMapper = $this->getDataMapper($form);
+
+            if ($dataMapper instanceof DataMapper && null !== $dataAccessor = $dataMapper->getDataAccessor()) {
+                return $dataAccessor->getValue($data, $form);
+            }
+
+            return $this->getPropertyValue($data, $propertyPath);
+        };
+
         // If the field is of type DateTimeInterface and the data is the same skip the update to
         // keep the original object hash
-        if ($value instanceof \DateTimeInterface && $value == $this->getPropertyValue($data, $propertyPath)) {
+        if ($value instanceof \DateTimeInterface && $value == $getValue()) {
             return;
         }
 
         // If the data is identical to the value in $data, we are
         // dealing with a reference
-        if (!\is_object($data) || !$form->getConfig()->getByReference() || $value !== $this->getPropertyValue($data, $propertyPath)) {
+        if (!\is_object($data) || !$form->getConfig()->getByReference() || $value !== $getValue()) {
             $this->propertyAccessor->setValue($data, $propertyPath, $value);
         }
     }
@@ -93,4 +105,13 @@ private function getPropertyValue(object|array $data, PropertyPathInterface $pro
             return null;
         }
     }
+
+    private function getDataMapper(FormInterface $form): ?DataMapperInterface
+    {
+        do {
+            $dataMapper = $form->getConfig()->getDataMapper();
+        } while (null === $dataMapper && null !== $form = $form->getParent());
+
+        return $dataMapper;
+    }
 }
diff --git a/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php b/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php
index f27f9d14bff98..a7bf98032202e 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataMapper/DataMapper.php
@@ -74,4 +74,12 @@ public function mapFormsToData(\Traversable $forms, mixed &$data): void
             }
         }
     }
+
+    /**
+     * @internal
+     */
+    public function getDataAccessor(): DataAccessorInterface
+    {
+        return $this->dataAccessor;
+    }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php
index fafd0e9d032fc..1a8f2678dd74a 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/DataMapperTest.php
@@ -16,6 +16,8 @@
 use Symfony\Component\Form\Extension\Core\DataAccessor\PropertyPathAccessor;
 use Symfony\Component\Form\Extension\Core\DataMapper\DataMapper;
 use Symfony\Component\Form\Extension\Core\Type\DateType;
+use Symfony\Component\Form\Extension\Core\Type\FormType;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
 use Symfony\Component\Form\Form;
 use Symfony\Component\Form\FormConfigBuilder;
 use Symfony\Component\Form\FormFactoryBuilder;
@@ -403,6 +405,25 @@ public function testMapFormsToDataMapsDateTimeInstanceToArrayIfNotSetBefore()
 
         $this->assertEquals(['date' => new \DateTime('2022-08-04', new \DateTimeZone('UTC'))], $form->getData());
     }
+
+    public function testMapFormToDataWithOnlyGetterConfigured()
+    {
+        $person = new DummyPerson('foo');
+        $form = (new FormFactoryBuilder())
+            ->getFormFactory()
+            ->createBuilder(FormType::class, $person)
+            ->add('name', TextType::class, [
+                'getter' => function (DummyPerson $person) {
+                    return $person->myName();
+                },
+            ])
+            ->getForm();
+        $form->submit([
+            'name' => 'bar',
+        ]);
+
+        $this->assertSame('bar', $person->myName());
+    }
 }
 
 class SubmittedForm extends Form
@@ -439,4 +460,9 @@ public function rename($name): void
     {
         $this->name = $name;
     }
+
+    public function setName($name): void
+    {
+        $this->name = $name;
+    }
 }
diff --git a/src/Symfony/Component/HtmlSanitizer/.gitattributes b/src/Symfony/Component/HtmlSanitizer/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/HtmlSanitizer/.gitattributes
+++ b/src/Symfony/Component/HtmlSanitizer/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/HtmlSanitizer/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/HtmlSanitizer/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/HtmlSanitizer/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/HtmlSanitizer/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/HtmlSanitizer/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/HtmlSanitizer/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/HtmlSanitizer/Tests/HtmlSanitizerAllTest.php b/src/Symfony/Component/HtmlSanitizer/Tests/HtmlSanitizerAllTest.php
index a0a15116b3137..90436cae631a7 100644
--- a/src/Symfony/Component/HtmlSanitizer/Tests/HtmlSanitizerAllTest.php
+++ b/src/Symfony/Component/HtmlSanitizer/Tests/HtmlSanitizerAllTest.php
@@ -309,6 +309,12 @@ public static function provideSanitizeBody()
                 'Lorem ipsum  ',
             ],
 
+            // Processing instructions
+            [
+                'Lorem ipsum<?div x?>foo',
+                'Lorem ipsumfoo',
+            ],
+
             // Normal tags
             [
                 '<abbr>Lorem ipsum</abbr>',
diff --git a/src/Symfony/Component/HtmlSanitizer/Visitor/DomVisitor.php b/src/Symfony/Component/HtmlSanitizer/Visitor/DomVisitor.php
index 4c2eba0c16198..8cda8cf2a8bd0 100644
--- a/src/Symfony/Component/HtmlSanitizer/Visitor/DomVisitor.php
+++ b/src/Symfony/Component/HtmlSanitizer/Visitor/DomVisitor.php
@@ -134,9 +134,10 @@ private function visitChildren(\DOMNode $domNode, Cursor $cursor): void
             if ('#text' === $child->nodeName) {
                 // Add text directly for performance
                 $cursor->node->addChild(new TextNode($cursor->node, $child->nodeValue));
-            } elseif (!$child instanceof \DOMText) {
+            } elseif (!$child instanceof \DOMText && !$child instanceof \DOMProcessingInstruction) {
                 // Otherwise continue the visit recursively
                 // Ignore comments for security reasons (interpreted differently by browsers)
+                // Ignore processing instructions (treated as comments)
                 $this->visitNode($child, $cursor);
             }
         }
diff --git a/src/Symfony/Component/HttpClient/.gitattributes b/src/Symfony/Component/HttpClient/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/HttpClient/.gitattributes
+++ b/src/Symfony/Component/HttpClient/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/HttpClient/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/HttpClient/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/HttpClient/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/HttpClient/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/HttpClient/CurlHttpClient.php b/src/Symfony/Component/HttpClient/CurlHttpClient.php
index 4446a031e9695..fef0ad09a9079 100644
--- a/src/Symfony/Component/HttpClient/CurlHttpClient.php
+++ b/src/Symfony/Component/HttpClient/CurlHttpClient.php
@@ -250,9 +250,8 @@ public function request(string $method, string $url, array $options = []): Respo
 
             if (isset($options['normalized_headers']['content-length'][0])) {
                 $curlopts[\CURLOPT_INFILESIZE] = (int) substr($options['normalized_headers']['content-length'][0], \strlen('Content-Length: '));
-            }
-            if (!isset($options['normalized_headers']['transfer-encoding'])) {
-                $curlopts[\CURLOPT_HTTPHEADER][] = 'Transfer-Encoding:'.(isset($curlopts[\CURLOPT_INFILESIZE]) ? '' : ' chunked');
+            } elseif (!isset($options['normalized_headers']['transfer-encoding'])) {
+                $curlopts[\CURLOPT_INFILESIZE] = -1;
             }
 
             if ('POST' !== $method) {
diff --git a/src/Symfony/Component/HttpClient/EventSourceHttpClient.php b/src/Symfony/Component/HttpClient/EventSourceHttpClient.php
index 80022eaf26653..4e551ac0409f6 100644
--- a/src/Symfony/Component/HttpClient/EventSourceHttpClient.php
+++ b/src/Symfony/Component/HttpClient/EventSourceHttpClient.php
@@ -121,7 +121,7 @@ public function request(string $method, string $url, array $options = []): Respo
                 return;
             }
 
-            $rx = '/((?:\r\n|[\r\n]){2,})/';
+            $rx = '/((?:\r\n){2,}|\r{2,}|\n{2,})/';
             $content = $state->buffer.$chunk->getContent();
 
             if ($chunk->isLast()) {
diff --git a/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php b/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php
index e4b1986d34e18..629655392ce81 100644
--- a/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php
+++ b/src/Symfony/Component/HttpClient/Tests/EventSourceHttpClientTest.php
@@ -27,9 +27,14 @@
  */
 class EventSourceHttpClientTest extends TestCase
 {
-    public function testGetServerSentEvents()
+    /**
+     * @testWith ["\n"]
+     *           ["\r"]
+     *           ["\r\n"]
+     */
+    public function testGetServerSentEvents(string $sep)
     {
-        $data = <<<TXT
+        $rawData = <<<TXT
 event: builderror
 id: 46
 data: {"foo": "bar"}
@@ -58,6 +63,7 @@ public function testGetServerSentEvents()
 id: 60
 data
 TXT;
+        $data = str_replace("\n", $sep, $rawData);
 
         $chunk = new DataChunk(0, $data);
         $response = new MockResponse('', ['canceled' => false, 'http_method' => 'GET', 'url' => 'http://localhost:8080/events', 'response_headers' => ['content-type: text/event-stream']]);
@@ -83,11 +89,11 @@ public function testGetServerSentEvents()
 
         $expected = [
             new FirstChunk(),
-            new ServerSentEvent("event: builderror\nid: 46\ndata: {\"foo\": \"bar\"}\n\n"),
-            new ServerSentEvent("event: reload\nid: 47\ndata: {}\n\n"),
-            new ServerSentEvent("event: reload\nid: 48\ndata: {}\n\n"),
-            new ServerSentEvent("data: test\ndata:test\nid: 49\nevent: testEvent\n\n\n"),
-            new ServerSentEvent("id: 50\ndata: <tag>\ndata\ndata:   <foo />\ndata\ndata: </tag>\n\n"),
+            new ServerSentEvent(str_replace("\n", $sep, "event: builderror\nid: 46\ndata: {\"foo\": \"bar\"}\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "event: reload\nid: 47\ndata: {}\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "event: reload\nid: 48\ndata: {}\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "data: test\ndata:test\nid: 49\nevent: testEvent\n\n\n")),
+            new ServerSentEvent(str_replace("\n", $sep, "id: 50\ndata: <tag>\ndata\ndata:   <foo />\ndata\ndata: </tag>\n\n")),
         ];
         $i = 0;
 
diff --git a/src/Symfony/Component/HttpFoundation/.gitattributes b/src/Symfony/Component/HttpFoundation/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/HttpFoundation/.gitattributes
+++ b/src/Symfony/Component/HttpFoundation/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/HttpFoundation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/HttpFoundation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/HttpFoundation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/HttpFoundation/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/HttpFoundation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/HttpFoundation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/HttpFoundation/RedirectResponse.php b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
index abb0c4c1b766c..3c2e4b620b6e1 100644
--- a/src/Symfony/Component/HttpFoundation/RedirectResponse.php
+++ b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
@@ -85,6 +85,7 @@ public function setTargetUrl(string $url): static
 </html>', htmlspecialchars($url, \ENT_QUOTES, 'UTF-8')));
 
         $this->headers->set('Location', $url);
+        $this->headers->set('Content-Type', 'text/html; charset=utf-8');
 
         return $this;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
index 3ed50c3fa36c8..fede448b30669 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
@@ -44,6 +44,13 @@ public function testGenerateLocationHeader()
         $this->assertEquals('foo.bar', $response->headers->get('Location'));
     }
 
+    public function testGenerateContentTypeHeader()
+    {
+        $response = new RedirectResponse('foo.bar');
+
+        $this->assertSame('text/html; charset=utf-8', $response->headers->get('Content-Type'));
+    }
+
     public function testGetTargetUrl()
     {
         $response = new RedirectResponse('foo.bar');
diff --git a/src/Symfony/Component/HttpKernel/.gitattributes b/src/Symfony/Component/HttpKernel/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/HttpKernel/.gitattributes
+++ b/src/Symfony/Component/HttpKernel/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/HttpKernel/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/HttpKernel/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/HttpKernel/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/HttpKernel/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
index 5a6a90974bb90..3a3f0485a790d 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
@@ -240,7 +240,7 @@ private function checkController(Request $request, callable $controller): callab
             $r = new \ReflectionFunction($controller);
             $name = $r->name;
 
-            if (str_contains($name, '{closure}')) {
+            if (str_contains($name, '{closure')) {
                 $name = $class = \Closure::class;
             } elseif ($class = $r->getClosureCalledClass()) {
                 $class = $class->name;
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
index 46de0b7aee873..607bb81538eae 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
@@ -60,9 +60,21 @@ protected function getCasters(): array
         $casters = [
             '*' => function ($v, array $a, Stub $s, $isNested) {
                 if (!$v instanceof Stub) {
+                    $b = $a;
                     foreach ($a as $k => $v) {
-                        if (\is_object($v) && !$v instanceof \DateTimeInterface && !$v instanceof Stub) {
-                            $a[$k] = new CutStub($v);
+                        if (!\is_object($v) || $v instanceof \DateTimeInterface || $v instanceof Stub) {
+                            continue;
+                        }
+
+                        try {
+                            $a[$k] = $s = new CutStub($v);
+
+                            if ($b[$k] === $s) {
+                                // we've hit a non-typed reference
+                                $a[$k] = $v;
+                            }
+                        } catch (\TypeError $e) {
+                            // we've hit a typed reference
                         }
                     }
                 }
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
index 6b6eb33d8d9d0..1b9c04476661a 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
@@ -469,7 +469,7 @@ private function parseController(array|object|string|null $controller): array|st
                 'line' => $r->getStartLine(),
             ];
 
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 return $controller;
             }
             $controller['method'] = $r->name;
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
index ff15502ce74fa..66626d199bfa2 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
@@ -56,6 +56,7 @@ public function process(ContainerBuilder $container): void
         foreach ($container->findTaggedServiceIds('controller.service_arguments', true) as $id => $tags) {
             $def = $container->getDefinition($id);
             $def->setPublic(true);
+            $def->setLazy(false);
             $class = $def->getClass();
             $autowire = $def->isAutowired();
             $bindings = $def->getBindings();
diff --git a/src/Symfony/Component/HttpKernel/Event/ControllerEvent.php b/src/Symfony/Component/HttpKernel/Event/ControllerEvent.php
index 1f8520d29b1ba..5278200a79bb8 100644
--- a/src/Symfony/Component/HttpKernel/Event/ControllerEvent.php
+++ b/src/Symfony/Component/HttpKernel/Event/ControllerEvent.php
@@ -98,7 +98,7 @@ public function getAttributes(?string $className = null): array
         } elseif (\is_string($this->controller) && false !== $i = strpos($this->controller, '::')) {
             $class = new \ReflectionClass(substr($this->controller, 0, $i));
         } else {
-            $class = str_contains($this->controllerReflector->name, '{closure}') ? null : $this->controllerReflector->getClosureCalledClass();
+            $class = str_contains($this->controllerReflector->name, '{closure') ? null : $this->controllerReflector->getClosureCalledClass();
         }
         $this->attributes = [];
 
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 31bbe239be275..181ba1c667f76 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -76,11 +76,11 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
      */
     private static array $freshCache = [];
 
-    public const VERSION = '7.0.6';
-    public const VERSION_ID = 70006;
+    public const VERSION = '7.0.7';
+    public const VERSION_ID = 70007;
     public const MAJOR_VERSION = 7;
     public const MINOR_VERSION = 0;
-    public const RELEASE_VERSION = 6;
+    public const RELEASE_VERSION = 7;
     public const EXTRA_VERSION = '';
 
     public const END_OF_MAINTENANCE = '07/2024';
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
index ae79a3c93c504..4463e30e7bbb6 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
@@ -15,6 +15,8 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Tests\Fixtures\DataCollector\CloneVarDataCollector;
+use Symfony\Component\HttpKernel\Tests\Fixtures\UsePropertyInDestruct;
+use Symfony\Component\HttpKernel\Tests\Fixtures\WithPublicObjectProperty;
 use Symfony\Component\VarDumper\Cloner\VarCloner;
 
 class DataCollectorTest extends TestCase
@@ -35,4 +37,56 @@ public function testCloneVarExistingFilePath()
 
         $this->assertSame($filePath, $c->getData()[0]);
     }
+
+    public function testClassPublicObjectProperty()
+    {
+        $parent = new WithPublicObjectProperty();
+        $child = new WithPublicObjectProperty();
+
+        $child->parent = $parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
+
+    public function testClassPublicObjectPropertyAsReference()
+    {
+        $parent = new WithPublicObjectProperty();
+        $child = new WithPublicObjectProperty();
+
+        $child->parent = &$parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
+
+    public function testClassUsePropertyInDestruct()
+    {
+        $parent = new UsePropertyInDestruct();
+        $child = new UsePropertyInDestruct();
+
+        $child->parent = $parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
+
+    public function testClassUsePropertyAsReferenceInDestruct()
+    {
+        $parent = new UsePropertyInDestruct();
+        $child = new UsePropertyInDestruct();
+
+        $child->parent = &$parent;
+
+        $c = new CloneVarDataCollector($child);
+        $c->collect(new Request(), new Response());
+
+        $this->assertNotNull($c->getData()->parent);
+    }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
index fdc42e4ac02e9..04649f9ef35a2 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
@@ -118,7 +118,7 @@ public static function provideControllerCallables(): array
                 'Closure',
                 fn () => 'foo',
                 [
-                    'class' => __NAMESPACE__.'\{closure}',
+                    'class' => \PHP_VERSION_ID >= 80400 ? sprintf('{closure:%s():%d}', __METHOD__, __LINE__ - 2) : __NAMESPACE__.'\{closure}',
                     'method' => null,
                     'file' => __FILE__,
                     'line' => __LINE__ - 5,
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
index eb5193ae5f48b..d2927b16f43e8 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
@@ -31,6 +31,7 @@
 use Symfony\Component\DependencyInjection\TypedReference;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\DependencyInjection\RegisterControllerArgumentLocatorsPass;
+use Symfony\Component\HttpKernel\Tests\Fixtures\DataCollector\DummyController;
 use Symfony\Component\HttpKernel\Tests\Fixtures\Suit;
 
 class RegisterControllerArgumentLocatorsPassTest extends TestCase
@@ -290,6 +291,21 @@ public function testControllersAreMadePublic()
         $this->assertTrue($container->getDefinition('foo')->isPublic());
     }
 
+    public function testControllersAreMadeNonLazy()
+    {
+        $container = new ContainerBuilder();
+        $container->register('argument_resolver.service')->addArgument([]);
+
+        $container->register('foo', DummyController::class)
+            ->addTag('controller.service_arguments')
+            ->setLazy(true);
+
+        $pass = new RegisterControllerArgumentLocatorsPass();
+        $pass->process($container);
+
+        $this->assertFalse($container->getDefinition('foo')->isLazy());
+    }
+
     /**
      * @dataProvider provideBindings
      */
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/UsePropertyInDestruct.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/UsePropertyInDestruct.php
new file mode 100644
index 0000000000000..74225d355aadf
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/UsePropertyInDestruct.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace Symfony\Component\HttpKernel\Tests\Fixtures;
+
+class UsePropertyInDestruct
+{
+    public string $name;
+    public $parent = null;
+
+    public function __destruct()
+    {
+        if ($this->parent !== null) {
+            $this->parent->name = '';
+        }
+    }
+}
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/WithPublicObjectProperty.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/WithPublicObjectProperty.php
new file mode 100644
index 0000000000000..92ebdb04dd429
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/WithPublicObjectProperty.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace Symfony\Component\HttpKernel\Tests\Fixtures;
+
+class WithPublicObjectProperty
+{
+    public ?WithPublicObjectProperty $parent = null;
+}
diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index 22c0d6ce94f5f..bb81352199ee0 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -43,6 +43,7 @@
         "symfony/translation-contracts": "^2.5|^3",
         "symfony/uid": "^6.4|^7.0",
         "symfony/validator": "^6.4|^7.0",
+        "symfony/var-dumper": "^6.4|^7.0",
         "symfony/var-exporter": "^6.4|^7.0",
         "psr/cache": "^1.0|^2.0|^3.0",
         "twig/twig": "^3.0.4"
diff --git a/src/Symfony/Component/Intl/.gitattributes b/src/Symfony/Component/Intl/.gitattributes
index 76f27cd45836a..c1f028792d417 100644
--- a/src/Symfony/Component/Intl/.gitattributes
+++ b/src/Symfony/Component/Intl/.gitattributes
@@ -1,5 +1,4 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
 /Resources/emoji export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Intl/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Intl/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Intl/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Intl/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Intl/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Intl/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Intl/composer.json b/src/Symfony/Component/Intl/composer.json
index 360918baa6df9..97154f8efef90 100644
--- a/src/Symfony/Component/Intl/composer.json
+++ b/src/Symfony/Component/Intl/composer.json
@@ -34,7 +34,8 @@
     "autoload": {
         "psr-4": { "Symfony\\Component\\Intl\\": "" },
         "exclude-from-classmap": [
-            "/Tests/"
+            "/Tests/",
+            "/Resources/data/"
         ]
     },
     "minimum-stability": "dev"
diff --git a/src/Symfony/Component/Ldap/.gitattributes b/src/Symfony/Component/Ldap/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Ldap/.gitattributes
+++ b/src/Symfony/Component/Ldap/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Ldap/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Ldap/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Ldap/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Ldap/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Ldap/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Ldap/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Lock/.gitattributes b/src/Symfony/Component/Lock/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Lock/.gitattributes
+++ b/src/Symfony/Component/Lock/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Lock/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Lock/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Lock/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Lock/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Lock/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Lock/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/.gitattributes b/src/Symfony/Component/Mailer/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/.gitattributes
+++ b/src/Symfony/Component/Mailer/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Brevo/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Brevo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Brevo/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Brevo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Brevo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Brevo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Brevo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Brevo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Brevo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Brevo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Google/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Google/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Google/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Google/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Google/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Google/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Google/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Infobip/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Infobip/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Infobip/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Infobip/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Infobip/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Infobip/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Infobip/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/MailPace/.gitattributes b/src/Symfony/Component/Mailer/Bridge/MailPace/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/MailPace/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/MailPace/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/MailPace/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/MailPace/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/MailPace/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/MailPace/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/MailPace/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/MailPace/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailchimp/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/MailerSend/.gitattributes b/src/Symfony/Component/Mailer/Bridge/MailerSend/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/MailerSend/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/MailerSend/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/MailerSend/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/MailerSend/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/MailerSend/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/MailerSend/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/MailerSend/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/MailerSend/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Mailjet/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Postmark/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postmark/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Scaleway/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Scaleway/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Scaleway/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Scaleway/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Scaleway/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Scaleway/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Scaleway/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Scaleway/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Scaleway/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Scaleway/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes
+++ b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Sendgrid/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/.gitattributes b/src/Symfony/Component/Messenger/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/.gitattributes
+++ b/src/Symfony/Component/Messenger/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/AmazonSqs/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/ConnectionTest.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/ConnectionTest.php
index e2aee3c23eb1f..25d661ac24abb 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/ConnectionTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/ConnectionTest.php
@@ -20,6 +20,7 @@
 use Doctrine\DBAL\Platforms\OraclePlatform;
 use Doctrine\DBAL\Platforms\SQLServer2012Platform;
 use Doctrine\DBAL\Platforms\SQLServerPlatform;
+use Doctrine\DBAL\Query\ForUpdate\ConflictResolutionMode;
 use Doctrine\DBAL\Query\QueryBuilder;
 use Doctrine\DBAL\Result;
 use Doctrine\DBAL\Schema\AbstractSchemaManager;
@@ -99,6 +100,82 @@ public function testGetWithNoPendingMessageWillReturnNull()
         $this->assertNull($doctrineEnvelope);
     }
 
+    public function testGetWithSkipLockedWithForUpdateMethod()
+    {
+        if (!method_exists(QueryBuilder::class, 'forUpdate')) {
+            $this->markTestSkipped('This test is for when forUpdate method exists.');
+        }
+
+        $queryBuilder = $this->getQueryBuilderMock();
+        $driverConnection = $this->getDBALConnectionMock();
+        $stmt = $this->getResultMock(false);
+
+        $queryBuilder
+            ->method('getParameters')
+            ->willReturn([]);
+        $queryBuilder
+            ->method('getParameterTypes')
+            ->willReturn([]);
+        $queryBuilder
+            ->method('forUpdate')
+            ->with(ConflictResolutionMode::SKIP_LOCKED)
+            ->willReturn($queryBuilder);
+        $queryBuilder
+            ->method('getSQL')
+            ->willReturn('SELECT FOR UPDATE SKIP LOCKED');
+        $driverConnection->expects($this->once())
+            ->method('createQueryBuilder')
+            ->willReturn($queryBuilder);
+        $driverConnection->expects($this->never())
+            ->method('update');
+        $driverConnection
+            ->method('executeQuery')
+            ->with($this->callback(function ($sql) {
+                return str_contains($sql, 'SKIP LOCKED');
+            }))
+            ->willReturn($stmt);
+
+        $connection = new Connection(['skip_locked' => true], $driverConnection);
+        $doctrineEnvelope = $connection->get();
+        $this->assertNull($doctrineEnvelope);
+    }
+
+    public function testGetWithSkipLockedWithoutForUpdateMethod()
+    {
+        if (method_exists(QueryBuilder::class, 'forUpdate')) {
+            $this->markTestSkipped('This test is for when forUpdate method does not exist.');
+        }
+
+        $queryBuilder = $this->getQueryBuilderMock();
+        $driverConnection = $this->getDBALConnectionMock();
+        $stmt = $this->getResultMock(false);
+
+        $queryBuilder
+            ->method('getParameters')
+            ->willReturn([]);
+        $queryBuilder
+            ->method('getParameterTypes')
+            ->willReturn([]);
+        $queryBuilder
+            ->method('getSQL')
+            ->willReturn('SELECT');
+        $driverConnection->expects($this->once())
+            ->method('createQueryBuilder')
+            ->willReturn($queryBuilder);
+        $driverConnection->expects($this->never())
+            ->method('update');
+        $driverConnection
+            ->method('executeQuery')
+            ->with($this->callback(function ($sql) {
+                return str_contains($sql, 'SKIP LOCKED');
+            }))
+            ->willReturn($stmt);
+
+        $connection = new Connection(['skip_locked' => true], $driverConnection);
+        $doctrineEnvelope = $connection->get();
+        $this->assertNull($doctrineEnvelope);
+    }
+
     public function testItThrowsATransportExceptionIfItCannotAcknowledgeMessage()
     {
         $this->expectException(TransportException::class);
@@ -223,7 +300,7 @@ private function getDBALConnectionMock()
         $platform = $this->createMock(AbstractPlatform::class);
 
         if (!method_exists(QueryBuilder::class, 'forUpdate')) {
-            $platform->method('getWriteLockSQL')->willReturn('FOR UPDATE');
+            $platform->method('getWriteLockSQL')->willReturn('FOR UPDATE SKIP LOCKED');
         }
 
         $configuration = $this->createMock(\Doctrine\DBAL\Configuration::class);
@@ -496,20 +573,20 @@ class_exists(MySQLPlatform::class) ? new MySQLPlatform() : new MySQL57Platform()
 
         yield 'SQL Server' => [
             class_exists(SQLServerPlatform::class) && !class_exists(SQLServer2012Platform::class) ? new SQLServerPlatform() : new SQLServer2012Platform(),
-            'SELECT m.* FROM messenger_messages m WITH (UPDLOCK, ROWLOCK) WHERE (m.queue_name = ?) AND (m.delivered_at is null OR m.delivered_at < ?) AND (m.available_at <= ?) ORDER BY available_at ASC OFFSET 0 ROWS FETCH NEXT 1 ROWS ONLY  ',
+            sprintf('SELECT m.* FROM messenger_messages m WITH (UPDLOCK, ROWLOCK%s) WHERE (m.queue_name = ?) AND (m.delivered_at is null OR m.delivered_at < ?) AND (m.available_at <= ?) ORDER BY available_at ASC OFFSET 0 ROWS FETCH NEXT 1 ROWS ONLY  ', method_exists(QueryBuilder::class, 'forUpdate') ? ', READPAST' : ''),
         ];
 
         if (!class_exists(MySQL57Platform::class)) {
             // DBAL >= 4
             yield 'Oracle' => [
                 new OraclePlatform(),
-                'SELECT w.id AS "id", w.body AS "body", w.headers AS "headers", w.queue_name AS "queue_name", w.created_at AS "created_at", w.available_at AS "available_at", w.delivered_at AS "delivered_at" FROM messenger_messages w WHERE w.id IN (SELECT m.id FROM messenger_messages m WHERE (m.queue_name = ?) AND (m.delivered_at is null OR m.delivered_at < ?) AND (m.available_at <= ?) ORDER BY available_at ASC FETCH NEXT 1 ROWS ONLY) FOR UPDATE',
+                'SELECT w.id AS "id", w.body AS "body", w.headers AS "headers", w.queue_name AS "queue_name", w.created_at AS "created_at", w.available_at AS "available_at", w.delivered_at AS "delivered_at" FROM messenger_messages w WHERE w.id IN (SELECT m.id FROM messenger_messages m WHERE (m.queue_name = ?) AND (m.delivered_at is null OR m.delivered_at < ?) AND (m.available_at <= ?) ORDER BY available_at ASC FETCH NEXT 1 ROWS ONLY) FOR UPDATE SKIP LOCKED',
             ];
         } else {
             // DBAL < 4
             yield 'Oracle' => [
                 new OraclePlatform(),
-                'SELECT w.id AS "id", w.body AS "body", w.headers AS "headers", w.queue_name AS "queue_name", w.created_at AS "created_at", w.available_at AS "available_at", w.delivered_at AS "delivered_at" FROM messenger_messages w WHERE w.id IN (SELECT a.id FROM (SELECT m.id FROM messenger_messages m WHERE (m.queue_name = ?) AND (m.delivered_at is null OR m.delivered_at < ?) AND (m.available_at <= ?) ORDER BY available_at ASC) a WHERE ROWNUM <= 1) FOR UPDATE',
+                sprintf('SELECT w.id AS "id", w.body AS "body", w.headers AS "headers", w.queue_name AS "queue_name", w.created_at AS "created_at", w.available_at AS "available_at", w.delivered_at AS "delivered_at" FROM messenger_messages w WHERE w.id IN (SELECT a.id FROM (SELECT m.id FROM messenger_messages m WHERE (m.queue_name = ?) AND (m.delivered_at is null OR m.delivered_at < ?) AND (m.available_at <= ?) ORDER BY available_at ASC) a WHERE ROWNUM <= 1) FOR UPDATE%s', method_exists(QueryBuilder::class, 'forUpdate') ? ' SKIP LOCKED' : ''),
             ];
         }
     }
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php
index 3310aac5948e6..fbb50bf42e215 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineIntegrationTest.php
@@ -191,6 +191,7 @@ public function testItRetrieveTheMessageThatIsOlderThanRedeliverTimeout()
 
     public function testTheTransportIsSetupOnGet()
     {
+        $this->driverConnection->executeStatement('CREATE TABLE unrelated (unknown_type_column)');
         $this->assertFalse($this->driverConnection->createSchemaManager()->tablesExist(['messenger_messages']));
         $this->assertNull($this->connection->get());
 
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlIntegrationTest.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlIntegrationTest.php
index 60f39eb434eea..392f991c0f541 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlIntegrationTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlIntegrationTest.php
@@ -64,4 +64,17 @@ public function testPostgreSqlConnectionSendAndGet()
 
         $this->assertNull($this->connection->get());
     }
+
+    public function testSkipLocked()
+    {
+        $connection = new PostgreSqlConnection(['table_name' => 'queue_table', 'skip_locked' => true], $this->driverConnection);
+
+        $connection->send('{"message": "Hi"}', ['type' => DummyMessage::class]);
+
+        $encoded = $connection->get();
+        $this->assertEquals('{"message": "Hi"}', $encoded['body']);
+        $this->assertEquals(['type' => DummyMessage::class], $encoded['headers']);
+
+        $this->assertNull($connection->get());
+    }
 }
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlRegularIntegrationTest.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlRegularIntegrationTest.php
index c8abedee48f66..f462d4599a0bf 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlRegularIntegrationTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrinePostgreSqlRegularIntegrationTest.php
@@ -57,6 +57,20 @@ public function testSendAndGetWithAutoSetupEnabledAndSetupAlready()
         $this->assertNull($this->connection->get());
     }
 
+    public function testSendAndGetWithSkipLockedEnabled()
+    {
+        $connection = new Connection(['table_name' => 'queue_table', 'skip_locked' => true], $this->driverConnection);
+        $connection->setup();
+
+        $connection->send('{"message": "Hi"}', ['type' => DummyMessage::class]);
+
+        $encoded = $connection->get();
+        $this->assertSame('{"message": "Hi"}', $encoded['body']);
+        $this->assertSame(['type' => DummyMessage::class], $encoded['headers']);
+
+        $this->assertNull($this->connection->get());
+    }
+
     protected function setUp(): void
     {
         if (!$host = getenv('POSTGRES_HOST')) {
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineReceiverTest.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineReceiverTest.php
index 3ec11c6c99d8c..b37b7db25fe0f 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineReceiverTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Tests/Transport/DoctrineReceiverTest.php
@@ -119,6 +119,188 @@ public function testFind()
         $this->assertEquals(new DummyMessage('Hi'), $actualEnvelope->getMessage());
     }
 
+    public function testAck()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $connection
+            ->expects($this->once())
+            ->method('ack')
+            ->with('1')
+            ->willReturn(true);
+
+        $receiver->ack($envelope);
+    }
+
+    public function testAckThrowsRetryableException()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $driverException = class_exists(Exception::class) ? Exception::new(new \PDOException('Deadlock', 40001)) : new PDOException(new \PDOException('Deadlock', 40001));
+        if (!class_exists(Version::class)) {
+            // This is doctrine/dbal 3.x
+            $deadlockException = new DeadlockException($driverException, null);
+        } else {
+            $deadlockException = new DeadlockException('Deadlock', $driverException);
+        }
+
+        $connection
+            ->expects($this->exactly(2))
+            ->method('ack')
+            ->with('1')
+            ->willReturnOnConsecutiveCalls(
+                $this->throwException($deadlockException),
+                true,
+            );
+
+        $receiver->ack($envelope);
+    }
+
+    public function testAckThrowsRetryableExceptionAndRetriesFail()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $driverException = class_exists(Exception::class) ? Exception::new(new \PDOException('Deadlock', 40001)) : new PDOException(new \PDOException('Deadlock', 40001));
+        if (!class_exists(Version::class)) {
+            // This is doctrine/dbal 3.x
+            $deadlockException = new DeadlockException($driverException, null);
+        } else {
+            $deadlockException = new DeadlockException('Deadlock', $driverException);
+        }
+
+        $connection
+            ->expects($this->exactly(4))
+            ->method('ack')
+            ->with('1')
+            ->willThrowException($deadlockException);
+
+        self::expectException(TransportException::class);
+        $receiver->ack($envelope);
+    }
+
+    public function testAckThrowsException()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $exception = new \RuntimeException();
+
+        $connection
+            ->expects($this->once())
+            ->method('ack')
+            ->with('1')
+            ->willThrowException($exception);
+
+        self::expectException($exception::class);
+        $receiver->ack($envelope);
+    }
+
+    public function testReject()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $connection
+            ->expects($this->once())
+            ->method('reject')
+            ->with('1')
+            ->willReturn(true);
+
+        $receiver->reject($envelope);
+    }
+
+    public function testRejectThrowsRetryableException()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $driverException = class_exists(Exception::class) ? Exception::new(new \PDOException('Deadlock', 40001)) : new PDOException(new \PDOException('Deadlock', 40001));
+        if (!class_exists(Version::class)) {
+            // This is doctrine/dbal 3.x
+            $deadlockException = new DeadlockException($driverException, null);
+        } else {
+            $deadlockException = new DeadlockException('Deadlock', $driverException);
+        }
+
+        $connection
+            ->expects($this->exactly(2))
+            ->method('reject')
+            ->with('1')
+            ->willReturnOnConsecutiveCalls(
+                $this->throwException($deadlockException),
+                true,
+            );
+
+        $receiver->reject($envelope);
+    }
+
+    public function testRejectThrowsRetryableExceptionAndRetriesFail()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $driverException = class_exists(Exception::class) ? Exception::new(new \PDOException('Deadlock', 40001)) : new PDOException(new \PDOException('Deadlock', 40001));
+        if (!class_exists(Version::class)) {
+            // This is doctrine/dbal 3.x
+            $deadlockException = new DeadlockException($driverException, null);
+        } else {
+            $deadlockException = new DeadlockException('Deadlock', $driverException);
+        }
+
+        $connection
+            ->expects($this->exactly(4))
+            ->method('reject')
+            ->with('1')
+            ->willThrowException($deadlockException);
+
+        self::expectException(TransportException::class);
+        $receiver->reject($envelope);
+    }
+
+    public function testRejectThrowsException()
+    {
+        $serializer = $this->createSerializer();
+        $connection = $this->createMock(Connection::class);
+
+        $envelope = new Envelope(new \stdClass(), [new DoctrineReceivedStamp('1')]);
+        $receiver = new DoctrineReceiver($connection, $serializer);
+
+        $exception = new \RuntimeException();
+
+        $connection
+            ->expects($this->once())
+            ->method('reject')
+            ->with('1')
+            ->willThrowException($exception);
+
+        self::expectException($exception::class);
+        $receiver->reject($envelope);
+    }
+
     private function createDoctrineEnvelope(): array
     {
         return [
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php
index e0b0c8c8b8d6b..dc4c5d8bd905d 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/Connection.php
@@ -19,6 +19,7 @@
 use Doctrine\DBAL\Platforms\AbstractMySQLPlatform;
 use Doctrine\DBAL\Platforms\OraclePlatform;
 use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
+use Doctrine\DBAL\Query\ForUpdate\ConflictResolutionMode;
 use Doctrine\DBAL\Query\QueryBuilder;
 use Doctrine\DBAL\Result;
 use Doctrine\DBAL\Schema\Schema;
@@ -182,15 +183,22 @@ public function get(): ?array
                     ->setParameters($query->getParameters(), $query->getParameterTypes());
 
                 if (method_exists(QueryBuilder::class, 'forUpdate')) {
-                    $query->forUpdate();
+                    $query->forUpdate(ConflictResolutionMode::SKIP_LOCKED);
                 }
 
                 $sql = $query->getSQL();
             } elseif (method_exists(QueryBuilder::class, 'forUpdate')) {
-                $query->forUpdate();
+                $query->forUpdate(ConflictResolutionMode::SKIP_LOCKED);
                 try {
                     $sql = $query->getSQL();
                 } catch (DBALException $e) {
+                    // If SKIP_LOCKED is not supported, fallback to without SKIP_LOCKED
+                    $query->forUpdate();
+
+                    try {
+                        $sql = $query->getSQL();
+                    } catch (DBALException $e) {
+                    }
                 }
             } elseif (preg_match('/FROM (.+) WHERE/', (string) $sql, $matches)) {
                 $fromClause = $matches[1];
@@ -281,7 +289,7 @@ public function setup(): void
     {
         $configuration = $this->driverConnection->getConfiguration();
         $assetFilter = $configuration->getSchemaAssetsFilter();
-        $configuration->setSchemaAssetsFilter(static fn () => true);
+        $configuration->setSchemaAssetsFilter(fn (string $tableName) => $tableName === $this->configuration['table_name']);
         $this->updateSchema();
         $configuration->setSchemaAssetsFilter($assetFilter);
         $this->autoSetup = false;
diff --git a/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/DoctrineReceiver.php b/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/DoctrineReceiver.php
index 2f6e4a5a823ad..20bd61151c44e 100644
--- a/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/DoctrineReceiver.php
+++ b/src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/DoctrineReceiver.php
@@ -67,20 +67,16 @@ public function get(): iterable
 
     public function ack(Envelope $envelope): void
     {
-        try {
+        $this->withRetryableExceptionRetry(function() use ($envelope) {
             $this->connection->ack($this->findDoctrineReceivedStamp($envelope)->getId());
-        } catch (DBALException $exception) {
-            throw new TransportException($exception->getMessage(), 0, $exception);
-        }
+        });
     }
 
     public function reject(Envelope $envelope): void
     {
-        try {
+        $this->withRetryableExceptionRetry(function() use ($envelope) {
             $this->connection->reject($this->findDoctrineReceivedStamp($envelope)->getId());
-        } catch (DBALException $exception) {
-            throw new TransportException($exception->getMessage(), 0, $exception);
-        }
+        });
     }
 
     public function getMessageCount(): int
@@ -150,4 +146,32 @@ private function createEnvelopeFromData(array $data): Envelope
             new TransportMessageIdStamp($data['id'])
         );
     }
+
+    private function withRetryableExceptionRetry(callable $callable): void
+    {
+        $delay = 100;
+        $multiplier = 2;
+        $jitter = 0.1;
+        $retries = 0;
+
+        retry:
+        try {
+            $callable();
+        } catch (RetryableException $exception) {
+            if (++$retries <= self::MAX_RETRIES) {
+                $delay *=  $multiplier;
+
+                $randomness = (int) ($delay * $jitter);
+                $delay += random_int(-$randomness, +$randomness);
+
+                usleep($delay * 1000);
+
+                goto retry;
+            }
+
+            throw new TransportException($exception->getMessage(), 0, $exception);
+        } catch (DBALException $exception) {
+            throw new TransportException($exception->getMessage(), 0, $exception);
+        }
+    }
 }
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes b/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Messenger/Bridge/Redis/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Messenger/Bridge/Redis/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php b/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php
index 6fb7f2f5f3cf8..46401a66d6ca0 100644
--- a/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php
+++ b/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php
@@ -88,6 +88,22 @@ public function __construct(array $options, \Redis|Relay|\RedisCluster|null $red
             throw new InvalidArgumentException('Cannot configure Redis Sentinel and Redis Cluster instance at the same time.');
         }
 
+        $booleanStreamOptions = [
+            'allow_self_signed',
+            'capture_peer_cert',
+            'capture_peer_cert_chain',
+            'disable_compression',
+            'SNI_enabled',
+            'verify_peer',
+            'verify_peer_name',
+        ];
+
+        foreach ($options['ssl'] ?? [] as $streamOption => $value) {
+            if (\in_array($streamOption, $booleanStreamOptions, true) && \is_string($value)) {
+                $options['ssl'][$streamOption] = filter_var($value, \FILTER_VALIDATE_BOOL);
+            }
+        }
+
         if ((\is_array($host) && null === $sentinelMaster) || $redis instanceof \RedisCluster) {
             $hosts = \is_string($host) ? [$host.':'.$port] : $host; // Always ensure we have an array
             $this->redis = static fn () => self::initializeRedisCluster($redis, $hosts, $auth, $options);
@@ -330,7 +346,7 @@ private function claimOldPendingMessages(): void
         try {
             // This could soon be optimized with https://github.com/antirez/redis/issues/5212 or
             // https://github.com/antirez/redis/issues/6256
-            $pendingMessages = $this->getRedis()->xpending($this->stream, $this->group, '-', '+', 1);
+            $pendingMessages = $this->getRedis()->xpending($this->stream, $this->group, '-', '+', 1) ?: [];
         } catch (\RedisException|\Relay\Exception $e) {
             throw new TransportException($e->getMessage(), 0, $e);
         }
diff --git a/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php b/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php
index 9dab4ada4327e..5a10dbc676a0f 100644
--- a/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php
+++ b/src/Symfony/Component/Messenger/Handler/HandlerDescriptor.php
@@ -32,7 +32,7 @@ public function __construct(callable $handler, array $options = [])
 
         $r = new \ReflectionFunction($handler);
 
-        if (str_contains($r->name, '{closure}')) {
+        if (str_contains($r->name, '{closure')) {
             $this->name = 'Closure';
         } elseif (!$handler = $r->getClosureThis()) {
             $class = $r->getClosureCalledClass();
diff --git a/src/Symfony/Component/Mime/.gitattributes b/src/Symfony/Component/Mime/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Mime/.gitattributes
+++ b/src/Symfony/Component/Mime/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mime/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Mime/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Mime/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Mime/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Mime/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Mime/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php b/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php
index ffddcbca70c38..70ab2d7c30a8c 100644
--- a/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php
+++ b/src/Symfony/Component/Mime/Tests/Part/DataPartTest.php
@@ -138,32 +138,35 @@ public function testFromPathWithNotAFile()
 
     public function testFromPathWithUrl()
     {
-        if (!\in_array('https', stream_get_wrappers())) {
-            $this->markTestSkipped('"https" stream wrapper is not enabled.');
+        if (!\in_array('http', stream_get_wrappers())) {
+            $this->markTestSkipped('"http" stream wrapper is not enabled.');
         }
 
         $finder = new PhpExecutableFinder();
-        $process = new Process(array_merge([$finder->find(false)], $finder->findArguments(), ['-dopcache.enable=0', '-dvariables_order=EGPCS', '-S', '127.0.0.1:8057']));
+        $process = new Process(array_merge([$finder->find(false)], $finder->findArguments(), ['-dopcache.enable=0', '-dvariables_order=EGPCS', '-S', 'localhost:8057']));
         $process->setWorkingDirectory(__DIR__.'/../Fixtures/web');
         $process->start();
 
-        do {
-            usleep(50000);
-        } while (!@fopen('http://127.0.0.1:8057', 'r'));
-
-        $p = DataPart::fromPath($file = 'http://localhost:8057/logo_symfony_header.png');
-        $content = file_get_contents($file);
-        $this->assertEquals($content, $p->getBody());
-        $maxLineLength = 76;
-        $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr($p->bodyToString(), 0, $maxLineLength));
-        $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr(implode('', iterator_to_array($p->bodyToIterable())), 0, $maxLineLength));
-        $this->assertEquals('image', $p->getMediaType());
-        $this->assertEquals('png', $p->getMediaSubType());
-        $this->assertEquals(new Headers(
-            new ParameterizedHeader('Content-Type', 'image/png', ['name' => 'logo_symfony_header.png']),
-            new UnstructuredHeader('Content-Transfer-Encoding', 'base64'),
-            new ParameterizedHeader('Content-Disposition', 'attachment', ['name' => 'logo_symfony_header.png', 'filename' => 'logo_symfony_header.png'])
-        ), $p->getPreparedHeaders());
+        try {
+            do {
+                usleep(50000);
+            } while (!@fopen('http://localhost:8057', 'r'));
+            $p = DataPart::fromPath($file = 'http://localhost:8057/logo_symfony_header.png');
+            $content = file_get_contents($file);
+            $this->assertEquals($content, $p->getBody());
+            $maxLineLength = 76;
+            $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr($p->bodyToString(), 0, $maxLineLength));
+            $this->assertEquals(substr(base64_encode($content), 0, $maxLineLength), substr(implode('', iterator_to_array($p->bodyToIterable())), 0, $maxLineLength));
+            $this->assertEquals('image', $p->getMediaType());
+            $this->assertEquals('png', $p->getMediaSubType());
+            $this->assertEquals(new Headers(
+                new ParameterizedHeader('Content-Type', 'image/png', ['name' => 'logo_symfony_header.png']),
+                new UnstructuredHeader('Content-Transfer-Encoding', 'base64'),
+                new ParameterizedHeader('Content-Disposition', 'attachment', ['name' => 'logo_symfony_header.png', 'filename' => 'logo_symfony_header.png'])
+            ), $p->getPreparedHeaders());
+        } finally {
+            $process->stop();
+        }
     }
 
     public function testHasContentId()
diff --git a/src/Symfony/Component/Notifier/.gitattributes b/src/Symfony/Component/Notifier/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/.gitattributes
+++ b/src/Symfony/Component/Notifier/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/AllMySms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AllMySms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/AmazonSns/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Bandwidth/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Bandwidth/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Bandwidth/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Bandwidth/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Bandwidth/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Bandwidth/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Bandwidth/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Bandwidth/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Bandwidth/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Bandwidth/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Brevo/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Brevo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Brevo/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Brevo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Brevo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Brevo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Brevo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Brevo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Brevo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Brevo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Chatwork/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Chatwork/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Chatwork/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Chatwork/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Chatwork/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Chatwork/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Chatwork/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Chatwork/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Chatwork/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Chatwork/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/ClickSend/.gitattributes b/src/Symfony/Component/Notifier/Bridge/ClickSend/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/ClickSend/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/ClickSend/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/ClickSend/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/ClickSend/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/ClickSend/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/ClickSend/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/ClickSend/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/ClickSend/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Clickatell/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Clickatell/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.gitattributes b/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/ContactEveryone/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Discord/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Discord/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Discord/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Discord/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Discord/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Discord/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Discord/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Engagespot/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Engagespot/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Engagespot/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Engagespot/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Engagespot/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Engagespot/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Engagespot/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Engagespot/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Engagespot/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Engagespot/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Esendex/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Esendex/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Esendex/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Esendex/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Expo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Expo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Expo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Expo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Expo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Expo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Expo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes b/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/FakeChat/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeChat/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/FakeSms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FakeSms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Firebase/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Firebase/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Firebase/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Firebase/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/FortySixElks/.gitattributes b/src/Symfony/Component/Notifier/Bridge/FortySixElks/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/FortySixElks/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/FortySixElks/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/FortySixElks/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/FortySixElks/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FortySixElks/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/FortySixElks/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/FortySixElks/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FortySixElks/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/FreeMobile/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GatewayApi/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Gitter/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Gitter/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Gitter/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Gitter/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/GoIp/.gitattributes b/src/Symfony/Component/Notifier/Bridge/GoIp/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/GoIp/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/GoIp/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/GoIp/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/GoIp/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GoIp/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/GoIp/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/GoIp/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GoIp/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/GoogleChat/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Infobip/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Infobip/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Infobip/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Iqsms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Iqsms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Isendpro/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Isendpro/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Isendpro/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Isendpro/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Isendpro/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Isendpro/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Isendpro/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Isendpro/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Isendpro/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Isendpro/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.gitattributes b/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/KazInfoTeh/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/LightSms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/LightSms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/LightSms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LightSms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/LineNotify/.gitattributes b/src/Symfony/Component/Notifier/Bridge/LineNotify/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/LineNotify/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/LineNotify/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/LineNotify/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/LineNotify/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LineNotify/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/LineNotify/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/LineNotify/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LineNotify/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/LinkedIn/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mailjet/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mailjet/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mastodon/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mastodon/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mastodon/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mastodon/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mastodon/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mastodon/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mastodon/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mastodon/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mastodon/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mastodon/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mattermost/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mattermost/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mercure/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mercure/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mercure/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mercure/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes b/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/MessageBird/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageBird/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MessageMedia/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/MicrosoftTeams/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Mobyt/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Mobyt/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Novu/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Novu/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Novu/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Novu/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Novu/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Novu/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Novu/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Novu/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Novu/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Novu/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Ntfy/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Ntfy/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Ntfy/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Ntfy/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Ntfy/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Ntfy/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Ntfy/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Ntfy/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Ntfy/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Ntfy/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Octopush/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Octopush/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Octopush/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Octopush/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes b/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/OneSignal/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OneSignal/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/OrangeSms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/OrangeSms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/OrangeSms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/OrangeSms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/OrangeSms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/OrangeSms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OrangeSms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/OrangeSms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/OrangeSms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OrangeSms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/OvhCloud/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/PagerDuty/.gitattributes b/src/Symfony/Component/Notifier/Bridge/PagerDuty/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/PagerDuty/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/PagerDuty/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/PagerDuty/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/PagerDuty/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/PagerDuty/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/PagerDuty/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/PagerDuty/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/PagerDuty/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Plivo/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Plivo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Plivo/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Plivo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Plivo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Plivo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Plivo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Plivo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Plivo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Plivo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Pushover/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Pushover/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Pushover/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Pushover/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Pushover/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Pushover/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Pushover/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Pushover/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Pushover/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Pushover/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Redlink/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Redlink/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Redlink/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Redlink/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Redlink/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Redlink/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Redlink/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Redlink/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Redlink/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Redlink/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/RingCentral/.gitattributes b/src/Symfony/Component/Notifier/Bridge/RingCentral/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/RingCentral/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/RingCentral/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/RingCentral/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/RingCentral/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/RingCentral/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/RingCentral/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/RingCentral/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/RingCentral/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes b/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/RocketChat/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/RocketChat/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Sendberry/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Sendberry/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Sendberry/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Sendberry/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Sendberry/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Sendberry/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sendberry/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Sendberry/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Sendberry/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sendberry/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.gitattributes b/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SimpleTextin/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Sinch/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Sinch/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Sinch/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sinch/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Slack/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Slack/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Slack/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Slack/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Slack/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Slack/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Slack/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Sms77/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Sms77/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Sms77/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Sms77/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SmsBiuras/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsFactor/.gitattributes b/src/Symfony/Component/Notifier/Bridge/SmsFactor/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/SmsFactor/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/SmsFactor/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsFactor/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/SmsFactor/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SmsFactor/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/SmsFactor/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/SmsFactor/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SmsFactor/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Smsapi/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsapi/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Smsc/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsc/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsc/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsc/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsmode/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Smsmode/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Smsmode/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Smsmode/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsmode/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Smsmode/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsmode/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Smsmode/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Smsmode/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Smsmode/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes b/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/SpotHit/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/SpotHit/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Telnyx/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Telnyx/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Termii/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Termii/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Termii/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Termii/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Termii/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Termii/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Termii/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Termii/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Termii/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Termii/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes b/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/TurboSms/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/TurboSms/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Twilio/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Twilio/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Twilio/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Twilio/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Twitter/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Twitter/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Twitter/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Twitter/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Twitter/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Twitter/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Twitter/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Twitter/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Twitter/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Twitter/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Vonage/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Vonage/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Vonage/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Vonage/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Yunpian/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Yunpian/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Zendesk/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Zendesk/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Zendesk/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Zendesk/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Zendesk/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Zendesk/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Zendesk/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Zendesk/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Zendesk/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Zendesk/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes b/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes
+++ b/src/Symfony/Component/Notifier/Bridge/Zulip/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Notifier/Bridge/Zulip/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Notifier/Bridge/Zulip/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Notifier/Bridge/Zulip/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/OptionsResolver/.gitattributes b/src/Symfony/Component/OptionsResolver/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/OptionsResolver/.gitattributes
+++ b/src/Symfony/Component/OptionsResolver/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/OptionsResolver/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/OptionsResolver/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/OptionsResolver/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/OptionsResolver/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/OptionsResolver/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/OptionsResolver/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PasswordHasher/.gitattributes b/src/Symfony/Component/PasswordHasher/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/PasswordHasher/.gitattributes
+++ b/src/Symfony/Component/PasswordHasher/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/PasswordHasher/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/PasswordHasher/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/PasswordHasher/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/PasswordHasher/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/PasswordHasher/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/PasswordHasher/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php b/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php
index 5dc301916eed3..4cf708b806296 100644
--- a/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php
+++ b/src/Symfony/Component/PasswordHasher/Tests/Hasher/NativePasswordHasherTest.php
@@ -103,7 +103,11 @@ public function testBcryptWithNulByte()
         $hasher = new NativePasswordHasher(null, null, 4, \PASSWORD_BCRYPT);
         $plainPassword = "a\0b";
 
-        $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        if (\PHP_VERSION_ID < 80218 || \PHP_VERSION_ID >= 80300 && \PHP_VERSION_ID < 80305) {
+            // password_hash() does not accept passwords containing NUL bytes since PHP 8.2.18 and 8.3.5
+            $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        }
+
         $this->assertTrue($hasher->verify($hasher->hash($plainPassword), $plainPassword));
     }
 
diff --git a/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php b/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php
index 3dc97c768f6f1..101c09fc46ed3 100644
--- a/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php
+++ b/src/Symfony/Component/PasswordHasher/Tests/Hasher/SodiumPasswordHasherTest.php
@@ -78,7 +78,11 @@ public function testBcryptWithNulByte()
         $hasher = new SodiumPasswordHasher(null, null);
         $plainPassword = "a\0b";
 
-        $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        if (\PHP_VERSION_ID < 80218 || \PHP_VERSION_ID >= 80300 && \PHP_VERSION_ID < 80305) {
+            // password_hash() does not accept passwords containing NUL bytes since PHP 8.2.18 and 8.3.5
+            $this->assertFalse($hasher->verify(password_hash($plainPassword, \PASSWORD_BCRYPT, ['cost' => 4]), $plainPassword));
+        }
+
         $this->assertTrue($hasher->verify((new NativePasswordHasher(null, null, 4, \PASSWORD_BCRYPT))->hash($plainPassword), $plainPassword));
     }
 
diff --git a/src/Symfony/Component/Process/.gitattributes b/src/Symfony/Component/Process/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Process/.gitattributes
+++ b/src/Symfony/Component/Process/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Process/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Process/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Process/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Process/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Process/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Process/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PropertyAccess/.gitattributes b/src/Symfony/Component/PropertyAccess/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/PropertyAccess/.gitattributes
+++ b/src/Symfony/Component/PropertyAccess/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/PropertyAccess/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/PropertyAccess/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/PropertyAccess/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/PropertyAccess/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/PropertyAccess/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/PropertyAccess/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestClassMagicGet.php b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestClassMagicGet.php
index 070d3b3934cf1..21c36c5e6dbdb 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestClassMagicGet.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestClassMagicGet.php
@@ -40,7 +40,7 @@ public function __get(string $property)
         }
     }
 
-    public function __isset(string $property)
+    public function __isset(string $property): bool
     {
         return \in_array($property, ['magicProperty', 'constantMagicProperty'], true);
     }
diff --git a/src/Symfony/Component/PropertyInfo/.gitattributes b/src/Symfony/Component/PropertyInfo/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/PropertyInfo/.gitattributes
+++ b/src/Symfony/Component/PropertyInfo/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/PropertyInfo/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/PropertyInfo/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/PropertyInfo/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/PropertyInfo/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php
index 5762e58e32971..44888a6875229 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/PhpStanExtractor.php
@@ -232,6 +232,14 @@ private function getDocBlockFromProperty(string $class, string $property): ?arra
             return null;
         }
 
+        $reflector = $reflectionProperty->getDeclaringClass();
+
+        foreach ($reflector->getTraits() as $trait) {
+            if ($trait->hasProperty($property)) {
+                return $this->getDocBlockFromProperty($trait->getName(), $property);
+            }
+        }
+
         // Type can be inside property docblock as `@var`
         $rawDocNode = $reflectionProperty->getDocComment();
         $phpDocNode = $rawDocNode ? $this->getPhpDocNode($rawDocNode) : null;
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php
index d81c44685e5fb..74ef738ab2dde 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpStanExtractorTest.php
@@ -21,6 +21,7 @@
 use Symfony\Component\PropertyInfo\Tests\Fixtures\Php80Dummy;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\Php80PromotedDummy;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\RootDummy\RootDummyItem;
+use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace\DummyInAnotherNamespace;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\DummyUsedInTrait;
 use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\DummyUsingTrait;
 use Symfony\Component\PropertyInfo\Type;
@@ -306,6 +307,7 @@ public static function propertiesDefinedByTraitsProvider(): array
             ['propertyInTraitPrimitiveType', new Type(Type::BUILTIN_TYPE_STRING)],
             ['propertyInTraitObjectSameNamespace', new Type(Type::BUILTIN_TYPE_OBJECT, false, DummyUsedInTrait::class)],
             ['propertyInTraitObjectDifferentNamespace', new Type(Type::BUILTIN_TYPE_OBJECT, false, Dummy::class)],
+            ['dummyInAnotherNamespace', new Type(Type::BUILTIN_TYPE_OBJECT, false, DummyInAnotherNamespace::class)],
         ];
     }
 
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyInAnotherNamespace.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyInAnotherNamespace.php
new file mode 100644
index 0000000000000..5ae6b60b59731
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyInAnotherNamespace.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace;
+
+class DummyInAnotherNamespace
+{
+}
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyTraitInAnotherNamespace.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyTraitInAnotherNamespace.php
new file mode 100644
index 0000000000000..0cb6decf6daa5
--- /dev/null
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/AnotherNamespace/DummyTraitInAnotherNamespace.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace;
+
+trait DummyTraitInAnotherNamespace
+{
+    /**
+     * @var DummyInAnotherNamespace
+     */
+    public $dummyInAnotherNamespace;
+}
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php
index bfd75a36f41c1..d978d5f184aa4 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/TraitUsage/DummyUsingTrait.php
@@ -11,7 +11,10 @@
 
 namespace Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage;
 
+use Symfony\Component\PropertyInfo\Tests\Fixtures\TraitUsage\AnotherNamespace\DummyTraitInAnotherNamespace;
+
 class DummyUsingTrait
 {
     use DummyTrait;
+    use DummyTraitInAnotherNamespace;
 }
diff --git a/src/Symfony/Component/RateLimiter/.gitattributes b/src/Symfony/Component/RateLimiter/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/RateLimiter/.gitattributes
+++ b/src/Symfony/Component/RateLimiter/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/RateLimiter/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/RateLimiter/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/RateLimiter/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/RateLimiter/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/RateLimiter/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/RateLimiter/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/RemoteEvent/.gitattributes b/src/Symfony/Component/RemoteEvent/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/RemoteEvent/.gitattributes
+++ b/src/Symfony/Component/RemoteEvent/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/RemoteEvent/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/RemoteEvent/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/RemoteEvent/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/RemoteEvent/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/RemoteEvent/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/RemoteEvent/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Routing/.gitattributes b/src/Symfony/Component/Routing/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Routing/.gitattributes
+++ b/src/Symfony/Component/Routing/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Routing/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Routing/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Routing/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Routing/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Routing/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Routing/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Runtime/.gitattributes b/src/Symfony/Component/Runtime/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Runtime/.gitattributes
+++ b/src/Symfony/Component/Runtime/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Runtime/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Runtime/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Runtime/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Runtime/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Runtime/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Runtime/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Scheduler/.gitattributes b/src/Symfony/Component/Scheduler/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Scheduler/.gitattributes
+++ b/src/Symfony/Component/Scheduler/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Scheduler/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Scheduler/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Scheduler/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Scheduler/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Scheduler/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Scheduler/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Core/.gitattributes b/src/Symfony/Component/Security/Core/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Security/Core/.gitattributes
+++ b/src/Symfony/Component/Security/Core/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Security/Core/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Security/Core/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Security/Core/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Security/Core/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf b/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf
index bfa65ee21f2d1..bd58bee7037c2 100644
--- a/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf
+++ b/src/Symfony/Component/Security/Core/Resources/translations/security.da.xlf
@@ -8,11 +8,11 @@
             </trans-unit>
             <trans-unit id="2">
                 <source>Authentication credentials could not be found.</source>
-                <target>Loginoplysninger kan ikke findes.</target>
+                <target>Loginoplysninger kunne ikke findes.</target>
             </trans-unit>
             <trans-unit id="3">
                 <source>Authentication request could not be processed due to a system problem.</source>
-                <target>Godkendelsesanmodning kan ikke behandles på grund af et systemfejl.</target>
+                <target>Godkendelsesanmodningen kunne ikke behandles på grund af en systemfejl.</target>
             </trans-unit>
             <trans-unit id="4">
                 <source>Invalid credentials.</source>
@@ -20,7 +20,7 @@
             </trans-unit>
             <trans-unit id="5">
                 <source>Cookie has already been used by someone else.</source>
-                <target>Cookie er allerede brugt af en anden.</target>
+                <target>Cookie er allerede blevet brugt af en anden.</target>
             </trans-unit>
             <trans-unit id="6">
                 <source>Not privileged to request the resource.</source>
@@ -32,19 +32,19 @@
             </trans-unit>
             <trans-unit id="9">
                 <source>No authentication provider found to support the authentication token.</source>
-                <target>Ingen godkendelsesudbyder er fundet til understøttelsen af godkendelsestoken.</target>
+                <target>Ingen godkendelsesudbyder blev fundet til at understøtte godkendelsestoken.</target>
             </trans-unit>
             <trans-unit id="10">
                 <source>No session available, it either timed out or cookies are not enabled.</source>
-                <target>Ingen session tilgængelig, sessionen er enten udløbet eller cookies er ikke aktiveret.</target>
+                <target>Ingen session er tilgængelig. Den er enten udløbet eller cookies er ikke aktiveret.</target>
             </trans-unit>
             <trans-unit id="11">
                 <source>No token could be found.</source>
-                <target>Ingen token kan findes.</target>
+                <target>Ingen token kunne findes.</target>
             </trans-unit>
             <trans-unit id="12">
                 <source>Username could not be found.</source>
-                <target>Brugernavn kan ikke findes.</target>
+                <target>Brugernavn kunne ikke findes.</target>
             </trans-unit>
             <trans-unit id="13">
                 <source>Account has expired.</source>
@@ -64,15 +64,15 @@
             </trans-unit>
             <trans-unit id="17">
                 <source>Too many failed login attempts, please try again later.</source>
-                <target>For mange fejlede login forsøg, prøv venligst senere.</target>
+                <target>For mange mislykkede loginforsøg. Prøv venligst igen senere.</target>
             </trans-unit>
             <trans-unit id="18">
                 <source>Invalid or expired login link.</source>
-                <target>Ugyldigt eller udløbet login link.</target>
+                <target>Ugyldigt eller udløbet login-link.</target>
             </trans-unit>
             <trans-unit id="19">
                 <source>Too many failed login attempts, please try again in %minutes% minute.</source>
-                <target>For mange fejlede login forsøg, prøv igen om %minutes% minut.</target>
+                <target>For mange mislykkede loginforsøg. Prøv venligst igen om %minutes% minut.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Security/Csrf/.gitattributes b/src/Symfony/Component/Security/Csrf/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Security/Csrf/.gitattributes
+++ b/src/Symfony/Component/Security/Csrf/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Security/Csrf/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Security/Csrf/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Security/Csrf/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Security/Csrf/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Security/Csrf/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Security/Csrf/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Http/.gitattributes b/src/Symfony/Component/Security/Http/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Security/Http/.gitattributes
+++ b/src/Symfony/Component/Security/Http/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Security/Http/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Security/Http/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Security/Http/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Security/Http/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Security/Http/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Security/Http/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Security/Http/AccessToken/HeaderAccessTokenExtractor.php b/src/Symfony/Component/Security/Http/AccessToken/HeaderAccessTokenExtractor.php
index 487b87c24633d..0903d178babc3 100644
--- a/src/Symfony/Component/Security/Http/AccessToken/HeaderAccessTokenExtractor.php
+++ b/src/Symfony/Component/Security/Http/AccessToken/HeaderAccessTokenExtractor.php
@@ -29,7 +29,7 @@ public function __construct(
         private readonly string $tokenType = 'Bearer'
     ) {
         $this->regex = sprintf(
-            '/^%s([a-zA-Z0-9\-_\+~\/\.]+)$/',
+            '/^%s([a-zA-Z0-9\-_\+~\/\.]+=*)$/',
             '' === $this->tokenType ? '' : preg_quote($this->tokenType).'\s+'
         );
     }
diff --git a/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php b/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php
index 08c265e67129b..c475880b83ff2 100644
--- a/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php
+++ b/src/Symfony/Component/Security/Http/Authenticator/FormLoginAuthenticator.php
@@ -135,6 +135,10 @@ private function getCredentials(Request $request): array
             throw new BadRequestHttpException(sprintf('The key "%s" must be a string, "%s" given.', $this->options['password_parameter'], \gettype($credentials['password'])));
         }
 
+        if (!\is_string($credentials['csrf_token'] ?? '') && (!\is_object($credentials['csrf_token']) || !method_exists($credentials['csrf_token'], '__toString'))) {
+            throw new BadRequestHttpException(sprintf('The key "%s" must be a string, "%s" given.', $this->options['csrf_parameter'], \gettype($credentials['csrf_token'])));
+        }
+
         return $credentials;
     }
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Authenticator/AccessTokenAuthenticatorTest.php b/src/Symfony/Component/Security/Http/Tests/Authenticator/AccessTokenAuthenticatorTest.php
index 4f010000429dd..5ee4869b431ae 100644
--- a/src/Symfony/Component/Security/Http/Tests/Authenticator/AccessTokenAuthenticatorTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Authenticator/AccessTokenAuthenticatorTest.php
@@ -18,6 +18,7 @@
 use Symfony\Component\Security\Core\User\InMemoryUserProvider;
 use Symfony\Component\Security\Http\AccessToken\AccessTokenExtractorInterface;
 use Symfony\Component\Security\Http\AccessToken\AccessTokenHandlerInterface;
+use Symfony\Component\Security\Http\AccessToken\HeaderAccessTokenExtractor;
 use Symfony\Component\Security\Http\Authenticator\AccessTokenAuthenticator;
 use Symfony\Component\Security\Http\Authenticator\FallbackUserLoader;
 use Symfony\Component\Security\Http\Authenticator\Passport\Badge\UserBadge;
@@ -159,4 +160,31 @@ public function testAuthenticateWithFallbackUserLoader()
 
         $this->assertEquals('test', $passport->getUser()->getUserIdentifier());
     }
+
+    /**
+     * @dataProvider provideAccessTokenHeaderRegex
+     */
+    public function testAccessTokenHeaderRegex(string $input, ?string $expectedToken)
+    {
+        // Given
+        $extractor = new HeaderAccessTokenExtractor();
+        $request = Request::create('/test', 'GET', [], [], [], ['HTTP_AUTHORIZATION' => $input]);
+
+        // When
+        $token = $extractor->extractAccessToken($request);
+
+        // Then
+        $this->assertEquals($expectedToken, $token);
+    }
+
+    public function provideAccessTokenHeaderRegex(): array
+    {
+        return [
+            ['Bearer token', 'token'],
+            ['Bearer mF_9.B5f-4.1JqM', 'mF_9.B5f-4.1JqM'],
+            ['Bearer d3JvbmdfcmVnZXhwX2V4bWFwbGU=', 'd3JvbmdfcmVnZXhwX2V4bWFwbGU='],
+            ['Bearer Not Valid', null],
+            ['Bearer (NotOK123)', null],
+        ];
+    }
 }
diff --git a/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php b/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php
index b0b44d94ea73b..83c355d91c6ed 100644
--- a/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Authenticator/FormLoginAuthenticatorTest.php
@@ -165,6 +165,54 @@ public function __toString()
         $this->assertSame('s$cr$t', $credentialsBadge->getPassword());
     }
 
+    /**
+     * @dataProvider postOnlyDataProvider
+     */
+    public function testHandleNonStringCsrfTokenWithArray($postOnly)
+    {
+        $request = Request::create('/login_check', 'POST', ['_username' => 'foo', '_password' => 'bar', '_csrf_token' => []]);
+        $request->setSession($this->createSession());
+
+        $this->setUpAuthenticator(['post_only' => $postOnly]);
+
+        $this->expectException(BadRequestHttpException::class);
+        $this->expectExceptionMessage('The key "_csrf_token" must be a string, "array" given.');
+
+        $this->authenticator->authenticate($request);
+    }
+
+    /**
+     * @dataProvider postOnlyDataProvider
+     */
+    public function testHandleNonStringCsrfTokenWithInt($postOnly)
+    {
+        $request = Request::create('/login_check', 'POST', ['_username' => 'foo', '_password' => 'bar', '_csrf_token' => 42]);
+        $request->setSession($this->createSession());
+
+        $this->setUpAuthenticator(['post_only' => $postOnly]);
+
+        $this->expectException(BadRequestHttpException::class);
+        $this->expectExceptionMessage('The key "_csrf_token" must be a string, "integer" given.');
+
+        $this->authenticator->authenticate($request);
+    }
+
+    /**
+     * @dataProvider postOnlyDataProvider
+     */
+    public function testHandleNonStringCsrfTokenWithObject($postOnly)
+    {
+        $request = Request::create('/login_check', 'POST', ['_username' => 'foo', '_password' => 'bar', '_csrf_token' => new \stdClass()]);
+        $request->setSession($this->createSession());
+
+        $this->setUpAuthenticator(['post_only' => $postOnly]);
+
+        $this->expectException(BadRequestHttpException::class);
+        $this->expectExceptionMessage('The key "_csrf_token" must be a string, "object" given.');
+
+        $this->authenticator->authenticate($request);
+    }
+
     public static function postOnlyDataProvider()
     {
         yield [true];
diff --git a/src/Symfony/Component/Semaphore/.gitattributes b/src/Symfony/Component/Semaphore/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Semaphore/.gitattributes
+++ b/src/Symfony/Component/Semaphore/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Semaphore/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Semaphore/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Semaphore/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Semaphore/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Semaphore/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Semaphore/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Serializer/.gitattributes b/src/Symfony/Component/Serializer/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Serializer/.gitattributes
+++ b/src/Symfony/Component/Serializer/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Serializer/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Serializer/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Serializer/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Serializer/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Serializer/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Serializer/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Serializer/Context/Normalizer/AbstractNormalizerContextBuilder.php b/src/Symfony/Component/Serializer/Context/Normalizer/AbstractNormalizerContextBuilder.php
index ecb328dd651f4..f365ac8df2d70 100644
--- a/src/Symfony/Component/Serializer/Context/Normalizer/AbstractNormalizerContextBuilder.php
+++ b/src/Symfony/Component/Serializer/Context/Normalizer/AbstractNormalizerContextBuilder.php
@@ -104,17 +104,25 @@ public function withAllowExtraAttributes(?bool $allowExtraAttributes): static
     }
 
     /**
-     * Configures an hashmap of classes containing hashmaps of constructor argument => default value.
+     * Configures a hashmap of classes containing hashmaps of constructor argument => default value.
      *
      * The names need to match the parameter names in the constructor arguments.
      *
      * Eg: [Foo::class => ['foo' => true, 'bar' => 0]]
      *
-     * @param array<class-string, array<string, mixed>>|null $defaultContructorArguments
+     * @param array<class-string, array<string, mixed>>|null $defaultConstructorArguments
+     */
+    public function withDefaultConstructorArguments(?array $defaultConstructorArguments): static
+    {
+        return $this->with(AbstractNormalizer::DEFAULT_CONSTRUCTOR_ARGUMENTS, $defaultConstructorArguments);
+    }
+
+    /**
+     * Deprecated in Symfony 7.1, use withDefaultConstructorArguments() instead.
      */
     public function withDefaultContructorArguments(?array $defaultContructorArguments): static
     {
-        return $this->with(AbstractNormalizer::DEFAULT_CONSTRUCTOR_ARGUMENTS, $defaultContructorArguments);
+        return self::withDefaultConstructorArguments($defaultContructorArguments);
     }
 
     /**
diff --git a/src/Symfony/Component/Serializer/Mapping/Loader/AttributeLoader.php b/src/Symfony/Component/Serializer/Mapping/Loader/AttributeLoader.php
index 7643d9a561923..ddb4671641c42 100644
--- a/src/Symfony/Component/Serializer/Mapping/Loader/AttributeLoader.php
+++ b/src/Symfony/Component/Serializer/Mapping/Loader/AttributeLoader.php
@@ -125,7 +125,7 @@ public function loadClassMetadata(ClassMetadataInterface $classMetadata): bool
 
             $accessorOrMutator = preg_match('/^(get|is|has|set)(.+)$/i', $method->name, $matches);
             if ($accessorOrMutator) {
-                $attributeName = $reflectionClass->hasProperty($method->name) ? $method->name : lcfirst($matches[2]);
+                $attributeName = lcfirst($matches[2]);
 
                 if (isset($attributesMetadata[$attributeName])) {
                     $attributeMetadata = $attributesMetadata[$attributeName];
@@ -163,11 +163,9 @@ public function loadClassMetadata(ClassMetadataInterface $classMetadata): bool
 
                     $attributeMetadata->setSerializedPath($annotation->getSerializedPath());
                 } elseif ($annotation instanceof Ignore) {
-                    if (!$accessorOrMutator) {
-                        throw new MappingException(sprintf('Ignore on "%s::%s()" cannot be added. Ignore can only be added on methods beginning with "get", "is", "has" or "set".', $className, $method->name));
+                    if ($accessorOrMutator) {
+                        $attributeMetadata->setIgnore(true);
                     }
-
-                    $attributeMetadata->setIgnore(true);
                 } elseif ($annotation instanceof Context) {
                     if (!$accessorOrMutator) {
                         throw new MappingException(sprintf('Context on "%s::%s()" cannot be added. Context can only be added on methods beginning with "get", "is", "has" or "set".', $className, $method->name));
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 3d5e24adb47aa..9400616bddcd2 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -142,6 +142,8 @@ public function supportsNormalization(mixed $data, ?string $format = null, array
 
     public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
+        $context['_read_attributes'] = true;
+
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
         }
@@ -283,6 +285,8 @@ public function supportsDenormalization(mixed $data, string $type, ?string $form
 
     public function denormalize(mixed $data, string $type, ?string $format = null, array $context = []): mixed
     {
+        $context['_read_attributes'] = false;
+
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
         }
@@ -293,6 +297,10 @@ public function denormalize(mixed $data, string $type, ?string $format = null, a
             return null;
         }
 
+        if (XmlEncoder::FORMAT === $format && !\is_array($data)) {
+            $data = ['#' => $data];
+        }
+
         $allowedAttributes = $this->getAllowedAttributes($type, $context, true);
         $normalizedData = $this->prepareForDenormalization($data);
         $extraAttributes = [];
@@ -676,7 +684,7 @@ private function updateData(array $data, string $attribute, mixed $attributeValu
     private function isMaxDepthReached(array $attributesMetadata, string $class, string $attribute, array &$context): bool
     {
         if (!($enableMaxDepth = $context[self::ENABLE_MAX_DEPTH] ?? $this->defaultContext[self::ENABLE_MAX_DEPTH] ?? false)
-            || null === $maxDepth = $attributesMetadata[$attribute]?->getMaxDepth()
+            || !isset($attributesMetadata[$attribute]) || null === $maxDepth = $attributesMetadata[$attribute]?->getMaxDepth()
         ) {
             return false;
         }
diff --git a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
index e050bc153c906..33ca1effc6ef3 100644
--- a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
@@ -37,6 +37,7 @@
  */
 final class GetSetMethodNormalizer extends AbstractObjectNormalizer
 {
+    private static $reflectionCache = [];
     private static array $setterAccessibleCache = [];
 
     public function getSupportedTypes(?string $format): array
@@ -46,27 +47,31 @@ public function getSupportedTypes(?string $format): array
 
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
     {
-        return parent::supportsNormalization($data, $format) && $this->supports($data::class);
+        return parent::supportsNormalization($data, $format) && $this->supports($data::class, true);
     }
 
     public function supportsDenormalization(mixed $data, string $type, ?string $format = null, array $context = []): bool
     {
-        return parent::supportsDenormalization($data, $type, $format) && $this->supports($type);
+        return parent::supportsDenormalization($data, $type, $format) && $this->supports($type, false);
     }
 
     /**
-     * Checks if the given class has any getter method.
+     * Checks if the given class has any getter or setter method.
      */
-    private function supports(string $class): bool
+    private function supports(string $class, bool $readAttributes): bool
     {
         if ($this->classDiscriminatorResolver?->getMappingForClass($class)) {
             return true;
         }
 
-        $class = new \ReflectionClass($class);
-        $methods = $class->getMethods(\ReflectionMethod::IS_PUBLIC);
-        foreach ($methods as $method) {
-            if ($this->isGetMethod($method)) {
+        if (!isset(self::$reflectionCache[$class])) {
+            self::$reflectionCache[$class] = new \ReflectionClass($class);
+        }
+
+        $reflection = self::$reflectionCache[$class];
+
+        foreach ($reflection->getMethods(\ReflectionMethod::IS_PUBLIC) as $reflectionMethod) {
+            if ($readAttributes ? $this->isGetMethod($reflectionMethod) : $this->isSetMethod($reflectionMethod)) {
                 return true;
             }
         }
@@ -87,6 +92,17 @@ private function isGetMethod(\ReflectionMethod $method): bool
             );
     }
 
+    /**
+     * Checks if a method's name matches /^set.+$/ and can be called non-statically with one parameter.
+     */
+    private function isSetMethod(\ReflectionMethod $method): bool
+    {
+        return !$method->isStatic()
+            && !$method->getAttributes(Ignore::class)
+            && 1 === $method->getNumberOfRequiredParameters()
+            && str_starts_with($method->name, 'set');
+    }
+
     protected function extractAttributes(object $object, ?string $format = null, array $context = []): array
     {
         $reflectionObject = new \ReflectionObject($object);
@@ -110,19 +126,17 @@ protected function extractAttributes(object $object, ?string $format = null, arr
 
     protected function getAttributeValue(object $object, string $attribute, ?string $format = null, array $context = []): mixed
     {
-        $ucfirsted = ucfirst($attribute);
-
-        $getter = 'get'.$ucfirsted;
+        $getter = 'get'.$attribute;
         if (method_exists($object, $getter) && \is_callable([$object, $getter])) {
             return $object->$getter();
         }
 
-        $isser = 'is'.$ucfirsted;
+        $isser = 'is'.$attribute;
         if (method_exists($object, $isser) && \is_callable([$object, $isser])) {
             return $object->$isser();
         }
 
-        $haser = 'has'.$ucfirsted;
+        $haser = 'has'.$attribute;
         if (method_exists($object, $haser) && \is_callable([$object, $haser])) {
             return $object->$haser();
         }
@@ -132,7 +146,7 @@ protected function getAttributeValue(object $object, string $attribute, ?string
 
     protected function setAttributeValue(object $object, string $attribute, mixed $value, ?string $format = null, array $context = []): void
     {
-        $setter = 'set'.ucfirst($attribute);
+        $setter = 'set'.$attribute;
         $key = $object::class.':'.$setter;
 
         if (!isset(self::$setterAccessibleCache[$key])) {
@@ -143,4 +157,48 @@ protected function setAttributeValue(object $object, string $attribute, mixed $v
             $object->$setter($value);
         }
     }
+
+    protected function isAllowedAttribute($classOrObject, string $attribute, ?string $format = null, array $context = []): bool
+    {
+        if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
+            return false;
+        }
+
+        $class = \is_object($classOrObject) ? \get_class($classOrObject) : $classOrObject;
+
+        if (!isset(self::$reflectionCache[$class])) {
+            self::$reflectionCache[$class] = new \ReflectionClass($class);
+        }
+
+        $reflection = self::$reflectionCache[$class];
+
+        if ($context['_read_attributes'] ?? true) {
+            foreach (['get', 'is', 'has'] as $getterPrefix) {
+                $getter = $getterPrefix.$attribute;
+                $reflectionMethod = $reflection->hasMethod($getter) ? $reflection->getMethod($getter) : null;
+                if ($reflectionMethod && $this->isGetMethod($reflectionMethod)) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        $setter = 'set'.$attribute;
+        if ($reflection->hasMethod($setter) && $this->isSetMethod($reflection->getMethod($setter))) {
+            return true;
+        }
+
+        $constructor = $reflection->getConstructor();
+
+        if ($constructor && $constructor->isPublic()) {
+            foreach ($constructor->getParameters() as $parameter) {
+                if ($parameter->getName() === $attribute) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
 }
diff --git a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
index 083d3dd3f7999..5aff910d62dec 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
@@ -14,7 +14,11 @@
 use Symfony\Component\PropertyAccess\Exception\NoSuchPropertyException;
 use Symfony\Component\PropertyAccess\PropertyAccess;
 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
+use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
+use Symfony\Component\PropertyInfo\PropertyInfoExtractorInterface;
 use Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface;
+use Symfony\Component\PropertyInfo\PropertyWriteInfo;
+use Symfony\Component\Serializer\Annotation\Ignore;
 use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Mapping\AttributeMetadata;
 use Symfony\Component\Serializer\Mapping\ClassDiscriminatorResolverInterface;
@@ -28,11 +32,14 @@
  */
 final class ObjectNormalizer extends AbstractObjectNormalizer
 {
+    private static $reflectionCache = [];
+
     protected PropertyAccessorInterface $propertyAccessor;
+    protected $propertyInfoExtractor;
 
     private readonly \Closure $objectClassResolver;
 
-    public function __construct(?ClassMetadataFactoryInterface $classMetadataFactory = null, ?NameConverterInterface $nameConverter = null, ?PropertyAccessorInterface $propertyAccessor = null, ?PropertyTypeExtractorInterface $propertyTypeExtractor = null, ?ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, ?callable $objectClassResolver = null, array $defaultContext = [])
+    public function __construct(?ClassMetadataFactoryInterface $classMetadataFactory = null, ?NameConverterInterface $nameConverter = null, ?PropertyAccessorInterface $propertyAccessor = null, ?PropertyTypeExtractorInterface $propertyTypeExtractor = null, ?ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, ?callable $objectClassResolver = null, array $defaultContext = [], ?PropertyInfoExtractorInterface $propertyInfoExtractor = null)
     {
         if (!class_exists(PropertyAccess::class)) {
             throw new LogicException('The ObjectNormalizer class requires the "PropertyAccess" component. Try running "composer require symfony/property-access".');
@@ -43,6 +50,7 @@ public function __construct(?ClassMetadataFactoryInterface $classMetadataFactory
         $this->propertyAccessor = $propertyAccessor ?: PropertyAccess::createPropertyAccessor();
 
         $this->objectClassResolver = ($objectClassResolver ?? static fn ($class) => \is_object($class) ? $class::class : $class)(...);
+        $this->propertyInfoExtractor = $propertyInfoExtractor ?: new ReflectionExtractor();
     }
 
     public function getSupportedTypes(?string $format): array
@@ -78,25 +86,17 @@ protected function extractAttributes(object $object, ?string $format = null, arr
 
             if (str_starts_with($name, 'get') || str_starts_with($name, 'has') || str_starts_with($name, 'can')) {
                 // getters, hassers and canners
-                $attributeName = $name;
+                $attributeName = substr($name, 3);
 
                 if (!$reflClass->hasProperty($attributeName)) {
-                    $attributeName = substr($attributeName, 3);
-
-                    if (!$reflClass->hasProperty($attributeName)) {
-                        $attributeName = lcfirst($attributeName);
-                    }
+                    $attributeName = lcfirst($attributeName);
                 }
             } elseif (str_starts_with($name, 'is')) {
                 // issers
-                $attributeName = $name;
+                $attributeName = substr($name, 2);
 
                 if (!$reflClass->hasProperty($attributeName)) {
-                    $attributeName = substr($attributeName, 2);
-
-                    if (!$reflClass->hasProperty($attributeName)) {
-                        $attributeName = lcfirst($attributeName);
-                    }
+                    $attributeName = lcfirst($attributeName);
                 }
             }
 
@@ -162,4 +162,38 @@ protected function getAllowedAttributes(string|object $classOrObject, array $con
 
         return $allowedAttributes;
     }
+
+    protected function isAllowedAttribute($classOrObject, string $attribute, ?string $format = null, array $context = []): bool
+    {
+        if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
+            return false;
+        }
+        $class = \is_object($classOrObject) ? \get_class($classOrObject) : $classOrObject;
+
+        if ($context['_read_attributes'] ?? true) {
+            return $this->propertyInfoExtractor->isReadable($class, $attribute) || $this->hasAttributeAccessorMethod($class, $attribute);
+        }
+
+        return $this->propertyInfoExtractor->isWritable($class, $attribute)
+            || ($writeInfo = $this->propertyInfoExtractor->getWriteInfo($class, $attribute)) && PropertyWriteInfo::TYPE_NONE !== $writeInfo->getType();
+    }
+
+    private function hasAttributeAccessorMethod(string $class, string $attribute): bool
+    {
+        if (!isset(self::$reflectionCache[$class])) {
+            self::$reflectionCache[$class] = new \ReflectionClass($class);
+        }
+
+        $reflection = self::$reflectionCache[$class];
+
+        if (!$reflection->hasMethod($attribute)) {
+            return false;
+        }
+
+        $method = $reflection->getMethod($attribute);
+
+        return !$method->isStatic()
+            && !$method->getAttributes(Ignore::class)
+            && !$method->getNumberOfRequiredParameters();
+    }
 }
diff --git a/src/Symfony/Component/Serializer/SerializerAwareTrait.php b/src/Symfony/Component/Serializer/SerializerAwareTrait.php
index e4ba0ecb9c225..495e5889ce818 100644
--- a/src/Symfony/Component/Serializer/SerializerAwareTrait.php
+++ b/src/Symfony/Component/Serializer/SerializerAwareTrait.php
@@ -16,7 +16,7 @@
  */
 trait SerializerAwareTrait
 {
-    protected SerializerInterface $serializer;
+    protected ?SerializerInterface $serializer = null;
 
     public function setSerializer(SerializerInterface $serializer): void
     {
diff --git a/src/Symfony/Component/Serializer/Tests/Context/Normalizer/AbstractNormalizerContextBuilderTest.php b/src/Symfony/Component/Serializer/Tests/Context/Normalizer/AbstractNormalizerContextBuilderTest.php
index 158fa8feacf7a..4b8f0cc3f7dc8 100644
--- a/src/Symfony/Component/Serializer/Tests/Context/Normalizer/AbstractNormalizerContextBuilderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Context/Normalizer/AbstractNormalizerContextBuilderTest.php
@@ -41,7 +41,7 @@ public function testWithers(array $values)
             ->withGroups($values[AbstractNormalizer::GROUPS])
             ->withAttributes($values[AbstractNormalizer::ATTRIBUTES])
             ->withAllowExtraAttributes($values[AbstractNormalizer::ALLOW_EXTRA_ATTRIBUTES])
-            ->withDefaultContructorArguments($values[AbstractNormalizer::DEFAULT_CONSTRUCTOR_ARGUMENTS])
+            ->withDefaultConstructorArguments($values[AbstractNormalizer::DEFAULT_CONSTRUCTOR_ARGUMENTS])
             ->withCallbacks($values[AbstractNormalizer::CALLBACKS])
             ->withCircularReferenceHandler($values[AbstractNormalizer::CIRCULAR_REFERENCE_HANDLER])
             ->withIgnoredAttributes($values[AbstractNormalizer::IGNORED_ATTRIBUTES])
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodDummy.php
deleted file mode 100644
index 89c8fcb9c399c..0000000000000
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodDummy.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Serializer\Tests\Fixtures;
-
-class SamePropertyAsMethodDummy
-{
-    private $freeTrial;
-    private $hasSubscribe;
-    private $getReady;
-    private $isActive;
-
-    public function __construct($freeTrial, $hasSubscribe, $getReady, $isActive)
-    {
-        $this->freeTrial = $freeTrial;
-        $this->hasSubscribe = $hasSubscribe;
-        $this->getReady = $getReady;
-        $this->isActive = $isActive;
-    }
-
-    public function getFreeTrial()
-    {
-        return $this->freeTrial;
-    }
-
-    public function hasSubscribe()
-    {
-        return $this->hasSubscribe;
-    }
-
-    public function getReady()
-    {
-        return $this->getReady;
-    }
-
-    public function isActive()
-    {
-        return $this->isActive;
-    }
-}
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithMethodSerializedNameDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithMethodSerializedNameDummy.php
deleted file mode 100644
index 203118885853e..0000000000000
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithMethodSerializedNameDummy.php
+++ /dev/null
@@ -1,54 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Serializer\Tests\Fixtures;
-
-use Symfony\Component\Serializer\Annotation\SerializedName;
-
-class SamePropertyAsMethodWithMethodSerializedNameDummy
-{
-    private $freeTrial;
-    private $hasSubscribe;
-    private $getReady;
-    private $isActive;
-
-    public function __construct($freeTrial, $hasSubscribe, $getReady, $isActive)
-    {
-        $this->freeTrial = $freeTrial;
-        $this->hasSubscribe = $hasSubscribe;
-        $this->getReady = $getReady;
-        $this->isActive = $isActive;
-    }
-
-    #[SerializedName('free_trial_method')]
-    public function getFreeTrial()
-    {
-        return $this->freeTrial;
-    }
-
-    #[SerializedName('has_subscribe_method')]
-    public function hasSubscribe()
-    {
-        return $this->hasSubscribe;
-    }
-
-    #[SerializedName('get_ready_method')]
-    public function getReady()
-    {
-        return $this->getReady;
-    }
-
-    #[SerializedName('is_active_method')]
-    public function isActive()
-    {
-        return $this->isActive;
-    }
-}
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithPropertySerializedNameDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithPropertySerializedNameDummy.php
deleted file mode 100644
index 0b681934f2fab..0000000000000
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/SamePropertyAsMethodWithPropertySerializedNameDummy.php
+++ /dev/null
@@ -1,57 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Serializer\Tests\Fixtures;
-
-use Symfony\Component\Serializer\Annotation\SerializedName;
-
-class SamePropertyAsMethodWithPropertySerializedNameDummy
-{
-    #[SerializedName('free_trial_property')]
-    private $freeTrial;
-
-    #[SerializedName('has_subscribe_property')]
-    private $hasSubscribe;
-
-    #[SerializedName('get_ready_property')]
-    private $getReady;
-
-    #[SerializedName('is_active_property')]
-    private $isActive;
-
-    public function __construct($freeTrial, $hasSubscribe, $getReady, $isActive)
-    {
-        $this->freeTrial = $freeTrial;
-        $this->hasSubscribe = $hasSubscribe;
-        $this->getReady = $getReady;
-        $this->isActive = $isActive;
-    }
-
-    public function getFreeTrial()
-    {
-        return $this->freeTrial;
-    }
-
-    public function hasSubscribe()
-    {
-        return $this->hasSubscribe;
-    }
-
-    public function getReady()
-    {
-        return $this->getReady;
-    }
-
-    public function isActive()
-    {
-        return $this->isActive;
-    }
-}
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AttributeLoaderTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AttributeLoaderTest.php
index f2353c8fad1b7..a76595506081d 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AttributeLoaderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AttributeLoaderTest.php
@@ -173,13 +173,12 @@ public function testThrowsOnContextOnInvalidMethod()
 
     public function testCanHandleUnrelatedIgnoredMethods()
     {
-        $this->expectException(MappingException::class);
-        $this->expectExceptionMessage(sprintf('Ignore on "%s::badIgnore()" cannot be added', Entity45016::class));
-
         $metadata = new ClassMetadata(Entity45016::class);
         $loader = $this->getLoaderForContextMapping();
 
         $loader->loadClassMetadata($metadata);
+
+        $this->assertSame(['id'], array_keys($metadata->getAttributesMetadata()));
     }
 
     public function testIgnoreGetterWithRequiredParameterIfIgnoreAnnotationIsUsed()
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
index d92f50e22ac84..3922a37e96586 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
@@ -1030,6 +1030,53 @@ protected function createChildContext(array $parentContext, string $attribute, ?
 
         $this->assertFalse($normalizer->childContextCacheKey);
     }
+
+    public function testDenormalizeXmlScalar()
+    {
+        $normalizer = new class () extends AbstractObjectNormalizer
+        {
+            public function __construct()
+            {
+                parent::__construct(null, new MetadataAwareNameConverter(new ClassMetadataFactory(new AttributeLoader())));
+            }
+
+            protected function extractAttributes(object $object, ?string $format = null, array $context = []): array
+            {
+                return [];
+            }
+
+            protected function getAttributeValue(object $object, string $attribute, ?string $format = null, array $context = []): mixed
+            {
+                return null;
+            }
+
+            protected function setAttributeValue(object $object, string $attribute, $value, ?string $format = null, array $context = []): void
+            {
+                $object->$attribute = $value;
+            }
+
+            public function getSupportedTypes(?string $format): array
+            {
+                return ['*' => false];
+            }
+        };
+
+        $this->assertSame('scalar', $normalizer->denormalize('scalar', XmlScalarDummy::class, 'xml')->value);
+    }
+
+    public function testNormalizationWithMaxDepthOnStdclassObjectDoesNotThrowWarning()
+    {
+        $object = new \stdClass();
+        $object->string = 'yes';
+
+        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
+        $normalizer = new ObjectNormalizer($classMetadataFactory);
+        $normalized = $normalizer->normalize($object, context: [
+            AbstractObjectNormalizer::ENABLE_MAX_DEPTH => true,
+        ]);
+
+        $this->assertSame(['string' => 'yes'], $normalized);
+    }
 }
 
 class AbstractObjectNormalizerDummy extends AbstractObjectNormalizer
@@ -1292,6 +1339,12 @@ class DummyChild
     public $bar;
 }
 
+class XmlScalarDummy
+{
+    #[SerializedName('#')]
+    public $value;
+}
+
 class SerializerCollectionDummy implements SerializerInterface, DenormalizerInterface
 {
     private array $normalizers;
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
index e3e8873799e45..bed1577de4094 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
@@ -526,6 +526,23 @@ public function testDenormalizeWithDiscriminator()
 
         $this->assertEquals($denormalized, $normalizer->denormalize(['type' => 'two', 'url' => 'url'], GetSetMethodDummyInterface::class));
     }
+
+    public function testSupportsAndNormalizeWithOnlyParentGetter()
+    {
+        $obj = new GetSetDummyChild();
+        $obj->setFoo('foo');
+
+        $this->assertTrue($this->normalizer->supportsNormalization($obj));
+        $this->assertSame(['foo' => 'foo'], $this->normalizer->normalize($obj));
+    }
+
+    public function testSupportsAndDenormalizeWithOnlyParentSetter()
+    {
+        $this->assertTrue($this->normalizer->supportsDenormalization(['foo' => 'foo'], GetSetDummyChild::class));
+
+        $obj = $this->normalizer->denormalize(['foo' => 'foo'], GetSetDummyChild::class);
+        $this->assertSame('foo', $obj->getFoo());
+    }
 }
 
 class GetSetDummy
@@ -828,3 +845,22 @@ public function setUrl(string $url): void
         $this->url = $url;
     }
 }
+
+class GetSetDummyChild extends GetSetDummyParent
+{
+}
+
+class GetSetDummyParent
+{
+    private $foo;
+
+    public function getFoo()
+    {
+        return $this->foo;
+    }
+
+    public function setFoo($foo)
+    {
+        $this->foo = $foo;
+    }
+}
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
index 8285dd88ee22b..fbe3d64d96b82 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
@@ -18,6 +18,7 @@
 use Symfony\Component\PropertyInfo\Extractor\PhpStanExtractor;
 use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
 use Symfony\Component\PropertyInfo\PropertyInfoExtractor;
+use Symfony\Component\Serializer\Attribute\Ignore;
 use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Exception\RuntimeException;
 use Symfony\Component\Serializer\Exception\UnexpectedValueException;
@@ -41,9 +42,6 @@
 use Symfony\Component\Serializer\Tests\Fixtures\Php74Dummy;
 use Symfony\Component\Serializer\Tests\Fixtures\Php74DummyPrivate;
 use Symfony\Component\Serializer\Tests\Fixtures\Php80Dummy;
-use Symfony\Component\Serializer\Tests\Fixtures\SamePropertyAsMethodDummy;
-use Symfony\Component\Serializer\Tests\Fixtures\SamePropertyAsMethodWithMethodSerializedNameDummy;
-use Symfony\Component\Serializer\Tests\Fixtures\SamePropertyAsMethodWithPropertySerializedNameDummy;
 use Symfony\Component\Serializer\Tests\Fixtures\SiblingHolder;
 use Symfony\Component\Serializer\Tests\Normalizer\Features\AttributesTestTrait;
 use Symfony\Component\Serializer\Tests\Normalizer\Features\CacheableObjectAttributesTestTrait;
@@ -839,51 +837,39 @@ public function testNormalizeStdClass()
         $this->assertSame(['baz' => 'baz'], $this->normalizer->normalize($o2));
     }
 
-    public function testSamePropertyAsMethod()
+    public function testNormalizeWithoutSerializerSet()
     {
-        $object = new SamePropertyAsMethodDummy('free_trial', 'has_subscribe', 'get_ready', 'is_active');
-        $expected = [
-            'freeTrial' => 'free_trial',
-            'hasSubscribe' => 'has_subscribe',
-            'getReady' => 'get_ready',
-            'isActive' => 'is_active',
-        ];
+        $normalizer = new ObjectNormalizer(new ClassMetadataFactory(new AttributeLoader()));
+
+        $this->expectException(LogicException::class);
+        $this->expectExceptionMessage('Cannot normalize attribute "foo" because the injected serializer is not a normalizer.');
 
-        $this->assertSame($expected, $this->normalizer->normalize($object));
+        $normalizer->normalize(new ObjectConstructorDummy([], [], []));
     }
 
-    public function testSamePropertyAsMethodWithPropertySerializedName()
+    public function testNormalizeWithIgnoreAttributeAndPrivateProperties()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
-        $this->normalizer = new ObjectNormalizer($classMetadataFactory, new MetadataAwareNameConverter($classMetadataFactory));
-        $this->normalizer->setSerializer($this->serializer);
-
-        $object = new SamePropertyAsMethodWithPropertySerializedNameDummy('free_trial', 'has_subscribe', 'get_ready', 'is_active');
-        $expected = [
-            'free_trial_property' => 'free_trial',
-            'has_subscribe_property' => 'has_subscribe',
-            'get_ready_property' => 'get_ready',
-            'is_active_property' => 'is_active',
-        ];
+        $normalizer = new ObjectNormalizer($classMetadataFactory);
 
-        $this->assertSame($expected, $this->normalizer->normalize($object));
+        $this->assertSame(['foo' => 'foo'], $normalizer->normalize(new ObjectDummyWithIgnoreAttributeAndPrivateProperty()));
     }
 
-    public function testSamePropertyAsMethodWithMethodSerializedName()
+    public function testDenormalizeWithIgnoreAttributeAndPrivateProperties()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
-        $this->normalizer = new ObjectNormalizer($classMetadataFactory, new MetadataAwareNameConverter($classMetadataFactory));
-        $this->normalizer->setSerializer($this->serializer);
+        $normalizer = new ObjectNormalizer($classMetadataFactory);
 
-        $object = new SamePropertyAsMethodWithMethodSerializedNameDummy('free_trial', 'has_subscribe', 'get_ready', 'is_active');
-        $expected = [
-            'free_trial_method' => 'free_trial',
-            'has_subscribe_method' => 'has_subscribe',
-            'get_ready_method' => 'get_ready',
-            'is_active_method' => 'is_active',
-        ];
+        $obj = $normalizer->denormalize([
+            'foo' => 'set',
+            'ignore' => 'set',
+            'private' => 'set',
+        ], ObjectDummyWithIgnoreAttributeAndPrivateProperty::class);
+
+        $expected = new ObjectDummyWithIgnoreAttributeAndPrivateProperty();
+        $expected->foo = 'set';
 
-        $this->assertSame($expected, $this->normalizer->normalize($object));
+        $this->assertEquals($expected, $obj);
     }
 }
 
@@ -1060,7 +1046,7 @@ public function __get($name)
         }
     }
 
-    public function __isset($name)
+    public function __isset($name): bool
     {
         return 'foo' === $name;
     }
@@ -1157,3 +1143,13 @@ public function getInner()
         return $this->inner;
     }
 }
+
+class ObjectDummyWithIgnoreAttributeAndPrivateProperty
+{
+    public $foo = 'foo';
+
+    #[Ignore]
+    public $ignored = 'ignored';
+
+    private $private = 'private';
+}
diff --git a/src/Symfony/Component/Stopwatch/.gitattributes b/src/Symfony/Component/Stopwatch/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Stopwatch/.gitattributes
+++ b/src/Symfony/Component/Stopwatch/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Stopwatch/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Stopwatch/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Stopwatch/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Stopwatch/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Stopwatch/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Stopwatch/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/String/.gitattributes b/src/Symfony/Component/String/.gitattributes
index 0f57d864c994d..166549d614199 100644
--- a/src/Symfony/Component/String/.gitattributes
+++ b/src/Symfony/Component/String/.gitattributes
@@ -2,5 +2,4 @@
 /Resources/WcswidthDataGenerator.php export-ignore
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/String/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/String/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/String/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/String/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/String/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/String/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/String/LazyString.php b/src/Symfony/Component/String/LazyString.php
index 519b54ab9df31..5e5df82be9224 100644
--- a/src/Symfony/Component/String/LazyString.php
+++ b/src/Symfony/Component/String/LazyString.php
@@ -129,7 +129,7 @@ private static function getPrettyName(callable $callback): string
         } elseif ($callback instanceof \Closure) {
             $r = new \ReflectionFunction($callback);
 
-            if (str_contains($r->name, '{closure}') || !$class = $r->getClosureCalledClass()) {
+            if (str_contains($r->name, '{closure') || !$class = $r->getClosureCalledClass()) {
                 return $r->name;
             }
 
diff --git a/src/Symfony/Component/String/Tests/LazyStringTest.php b/src/Symfony/Component/String/Tests/LazyStringTest.php
index f2d24ebcb23f4..b5405bbc465cc 100644
--- a/src/Symfony/Component/String/Tests/LazyStringTest.php
+++ b/src/Symfony/Component/String/Tests/LazyStringTest.php
@@ -39,7 +39,7 @@ public function testReturnTypeError()
         $s = LazyString::fromCallable(fn () => []);
 
         $this->expectException(\TypeError::class);
-        $this->expectExceptionMessage('Return value of '.__NAMESPACE__.'\{closure}() passed to '.LazyString::class.'::fromCallable() must be of the type string, array returned.');
+        $this->expectExceptionMessageMatches('{^Return value of .*\{closure.*\}\(\) passed to '.preg_quote(LazyString::class).'::fromCallable\(\) must be of the type string, array returned\.$}');
 
         (string) $s;
     }
diff --git a/src/Symfony/Component/Translation/.gitattributes b/src/Symfony/Component/Translation/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/.gitattributes
+++ b/src/Symfony/Component/Translation/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes b/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes
+++ b/src/Symfony/Component/Translation/Bridge/Crowdin/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/Bridge/Crowdin/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/Bridge/Crowdin/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Crowdin/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes b/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes
+++ b/src/Symfony/Component/Translation/Bridge/Loco/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/Bridge/Loco/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/Bridge/Loco/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Loco/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/Bridge/Loco/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/Bridge/Loco/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Loco/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes b/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes
+++ b/src/Symfony/Component/Translation/Bridge/Lokalise/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/Bridge/Lokalise/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/Bridge/Lokalise/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Lokalise/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Bridge/Phrase/.gitattributes b/src/Symfony/Component/Translation/Bridge/Phrase/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Translation/Bridge/Phrase/.gitattributes
+++ b/src/Symfony/Component/Translation/Bridge/Phrase/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Translation/Bridge/Phrase/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Translation/Bridge/Phrase/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Phrase/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Translation/Bridge/Phrase/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Translation/Bridge/Phrase/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Translation/Bridge/Phrase/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
index 31b3251baed92..ffe4bbbd89ed5 100644
--- a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
@@ -112,16 +112,20 @@ private function extractXliff1(\DOMDocument $dom, MessageCatalogue $catalogue, s
                     continue;
                 }
 
-                if (isset($translation->target) && 'needs-translation' === (string) $translation->target->attributes()['state']) {
+                $source = (string) (isset($attributes['resname']) && $attributes['resname'] ? $attributes['resname'] : $translation->source);
+
+                if (isset($translation->target)
+                    && 'needs-translation' === (string) $translation->target->attributes()['state']
+                    && \in_array((string) $translation->target, [$source, (string) $translation->source], true)
+                ) {
                     continue;
                 }
 
-                $source = isset($attributes['resname']) && $attributes['resname'] ? $attributes['resname'] : $translation->source;
                 // If the xlf file has another encoding specified, try to convert it because
                 // simple_xml will always return utf-8 encoded values
                 $target = $this->utf8ToCharset((string) ($translation->target ?? $translation->source), $encoding);
 
-                $catalogue->set((string) $source, $target, $domain);
+                $catalogue->set($source, $target, $domain);
 
                 $metadata = [
                     'source' => (string) $translation->source,
@@ -144,7 +148,7 @@ private function extractXliff1(\DOMDocument $dom, MessageCatalogue $catalogue, s
                     $metadata['id'] = (string) $attributes['id'];
                 }
 
-                $catalogue->setMetadata((string) $source, $metadata, $domain);
+                $catalogue->setMetadata($source, $metadata, $domain);
             }
         }
     }
diff --git a/src/Symfony/Component/Translation/LocaleSwitcher.php b/src/Symfony/Component/Translation/LocaleSwitcher.php
index c07809c58cbcc..4950a56bbb682 100644
--- a/src/Symfony/Component/Translation/LocaleSwitcher.php
+++ b/src/Symfony/Component/Translation/LocaleSwitcher.php
@@ -34,9 +34,14 @@ public function __construct(
 
     public function setLocale(string $locale): void
     {
-        if (class_exists(\Locale::class)) {
-            \Locale::setDefault($locale);
+        // Silently ignore if the intl extension is not loaded
+        try {
+            if (class_exists(\Locale::class, false)) {
+                \Locale::setDefault($locale);
+            }
+        } catch (\Exception) {
         }
+
         $this->locale = $locale;
         $this->requestContext?->setParameter('_locale', $locale);
 
diff --git a/src/Symfony/Component/Translation/Resources/bin/translation-status.php b/src/Symfony/Component/Translation/Resources/bin/translation-status.php
index 8064190d86e39..42fa1c69b33be 100644
--- a/src/Symfony/Component/Translation/Resources/bin/translation-status.php
+++ b/src/Symfony/Component/Translation/Resources/bin/translation-status.php
@@ -162,11 +162,11 @@ function extractLocaleFromFilePath($filePath)
 function extractTranslationKeys($filePath): array
 {
     $translationKeys = [];
-    $contents = new \SimpleXMLElement(file_get_contents($filePath));
+    $contents = new SimpleXMLElement(file_get_contents($filePath));
 
     foreach ($contents->file->body->{'trans-unit'} as $translationKey) {
         $translationId = (string) $translationKey['id'];
-        $translationKey = (string) $translationKey->source;
+        $translationKey = (string) ($translationKey['resname'] ?? $translationKey->source);
 
         $translationKeys[$translationId] = $translationKey;
     }
diff --git a/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
index b64b6f9511519..d8a08bbbf2a8d 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
@@ -52,9 +52,17 @@ public function testLoadRawXliff()
       </trans-unit>
       <trans-unit id="4">
         <source>test</source>
-        <target>with</target>
+        <target state="needs-translation">with</target>
         <note>note</note>
       </trans-unit>
+      <trans-unit id="5">
+        <source>baz</source>
+        <target state="needs-translation">baz</target>
+      </trans-unit>
+      <trans-unit id="6" resname="buz">
+        <source>baz</source>
+        <target state="needs-translation">buz</target>
+      </trans-unit>
     </body>
   </file>
 </xliff>
@@ -65,6 +73,7 @@ public function testLoadRawXliff()
         $this->assertEquals('en', $catalogue->getLocale());
         $this->assertSame([], libxml_get_errors());
         $this->assertContainsOnly('string', $catalogue->all('domain1'));
+        $this->assertSame(['foo', 'extra', 'key', 'test'], array_keys($catalogue->all('domain1')));
     }
 
     public function testLoadWithInternalErrorsEnabled()
diff --git a/src/Symfony/Component/Uid/.gitattributes b/src/Symfony/Component/Uid/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Uid/.gitattributes
+++ b/src/Symfony/Component/Uid/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Uid/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Uid/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Uid/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Uid/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Uid/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Uid/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Validator/.gitattributes b/src/Symfony/Component/Validator/.gitattributes
index c34694db5f725..b9f8f3944ce62 100644
--- a/src/Symfony/Component/Validator/.gitattributes
+++ b/src/Symfony/Component/Validator/.gitattributes
@@ -1,5 +1,4 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
 /Resources/bin/sync-iban-formats.php export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Validator/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Validator/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Validator/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Validator/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Validator/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Validator/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Validator/Constraints/Email.php b/src/Symfony/Component/Validator/Constraints/Email.php
index 214c94b80cb69..148bfba54aebd 100644
--- a/src/Symfony/Component/Validator/Constraints/Email.php
+++ b/src/Symfony/Component/Validator/Constraints/Email.php
@@ -55,6 +55,10 @@ public function __construct(
             throw new InvalidArgumentException('The "mode" parameter value is not valid.');
         }
 
+        if (null !== $mode && !\in_array($mode, self::VALIDATION_MODES, true)) {
+            throw new InvalidArgumentException('The "mode" parameter value is not valid.');
+        }
+
         parent::__construct($options, $groups, $payload);
 
         $this->message = $message ?? $this->message;
diff --git a/src/Symfony/Component/Validator/Constraints/Range.php b/src/Symfony/Component/Validator/Constraints/Range.php
index 55359f6b6634c..d3523a812cb6d 100644
--- a/src/Symfony/Component/Validator/Constraints/Range.php
+++ b/src/Symfony/Component/Validator/Constraints/Range.php
@@ -87,7 +87,7 @@ public function __construct(
             throw new LogicException(sprintf('The "%s" constraint requires the Symfony PropertyAccess component to use the "minPropertyPath" or "maxPropertyPath" option. Try running "composer require symfony/property-access".', static::class));
         }
 
-        if (null !== $this->min && null !== $this->max && ($minMessage || $maxMessage)) {
+        if (null !== $this->min && null !== $this->max && ($minMessage || $maxMessage || isset($options['minMessage']) || isset($options['maxMessage']))) {
             throw new ConstraintDefinitionException(sprintf('The "%s" constraint can not use "minMessage" and "maxMessage" when the "min" and "max" options are both set. Use "notInRangeMessage" instead.', static::class));
         }
     }
diff --git a/src/Symfony/Component/Validator/Context/ExecutionContext.php b/src/Symfony/Component/Validator/Context/ExecutionContext.php
index f21ed90fbd40e..8ab1ec4d5ca82 100644
--- a/src/Symfony/Component/Validator/Context/ExecutionContext.php
+++ b/src/Symfony/Component/Validator/Context/ExecutionContext.php
@@ -139,7 +139,7 @@ public function setConstraint(Constraint $constraint): void
         $this->constraint = $constraint;
     }
 
-    public function addViolation(string $message, array $parameters = []): void
+    public function addViolation(string|\Stringable $message, array $parameters = []): void
     {
         $this->violations->add(new ConstraintViolation(
             $this->translator->trans($message, $parameters, $this->translationDomain),
@@ -154,7 +154,7 @@ public function addViolation(string $message, array $parameters = []): void
         ));
     }
 
-    public function buildViolation(string $message, array $parameters = []): ConstraintViolationBuilderInterface
+    public function buildViolation(string|\Stringable $message, array $parameters = []): ConstraintViolationBuilderInterface
     {
         return new ConstraintViolationBuilder(
             $this->violations,
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf
index 387fb9a649711..f975fc5164edb 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.af.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Hierdie waarde is nie 'n geldige MAC-adres nie.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Die URL mis 'n topvlakdomein.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf
index dfd398ae95a4f..08012ac233bdd 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ar.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>هذه القيمة ليست عنوان MAC صالحًا.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>هذا الرابط يفتقر إلى نطاق المستوى الأعلى.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf
index b6152e99dabc0..2eeae5f8a69ce 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.az.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Bu dəyər etibarlı bir MAC ünvanı deyil.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Bu URL yuxarı səviyyəli domeni çatışmır.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf
index ea7001957572b..a0665388e4bee 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.be.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Гэта значэнне не з'яўляецца сапраўдным MAC-адрасам.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Гэтаму URL бракуе дамен верхняга ўзроўню.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf
index 5705364f80f84..d2405339f0c35 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.bg.xlf
@@ -68,7 +68,7 @@
             </trans-unit>
             <trans-unit id="17">
                 <source>The mime type of the file is invalid ({{ type }}). Allowed mime types are {{ types }}.</source>
-                <target>Mime типа на файла е невалиден ({{ type }}). Разрешени mime типове са {{ types }}.</target>
+                <target>Mime типът на файла е невалиден ({{ type }}). Разрешени mime типове са {{ types }}.</target>
             </trans-unit>
             <trans-unit id="18">
                 <source>This value should be {{ limit }} or less.</source>
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Тази стойност не е валиден IP адрес.</target>
+                <target>Стойността не е валиден IP адрес.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -156,7 +156,7 @@
             </trans-unit>
             <trans-unit id="42">
                 <source>The size of the image could not be detected.</source>
-                <target>Размера на изображението не може да бъде определен.</target>
+                <target>Размерът на изображението не може да бъде определен.</target>
             </trans-unit>
             <trans-unit id="43">
                 <source>The image width is too big ({{ width }}px). Allowed maximum width is {{ max_width }}px.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">В php.ini не е конфигурирана временна директория, или конфигурираната директория не съществува.</target>
+                <target>В php.ini не е конфигурирана временна директория или конфигурираната директория не съществува.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Тази стойност не е валиден международен банков сметка номер (IBAN).</target>
+                <target>Стойността не е валиден Международен номер на банкова сметка (IBAN).</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Тази стойност не е валиден код за идентификация на бизнеса (BIC).</target>
+                <target>Стойността не е валиден Бизнес идентификационен код (BIC).</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Тази стойност не е валиден UUID.</target>
+                <target>Стойността не е валиден UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -328,7 +328,7 @@
             </trans-unit>
             <trans-unit id="85">
                 <source>This Business Identifier Code (BIC) is not associated with IBAN {{ iban }}.</source>
-                <target>Бизнес идентификационния код (BIC) не е свързан с IBAN {{ iban }}.</target>
+                <target>Бизнес идентификационният код (BIC) не е свързан с IBAN {{ iban }}.</target>
             </trans-unit>
             <trans-unit id="86">
                 <source>This value should be valid JSON.</source>
@@ -360,7 +360,7 @@
             </trans-unit>
             <trans-unit id="93">
                 <source>This password has been leaked in a data breach, it must not be used. Please use another password.</source>
-                <target>Тази парола е компрометирана, не трябва да бъде използвана. Моля използвайте друга парола.</target>
+                <target>Тази парола е компрометирана, не може да бъде използвана. Моля използвайте друга парола.</target>
             </trans-unit>
             <trans-unit id="94">
                 <source>This value should be between {{ min }} and {{ max }}.</source>
@@ -436,7 +436,11 @@
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Тази стойност не е валиден MAC адрес.</target>
+                <target>Стойността не е валиден MAC адрес.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>На този URL липсва домейн от най-високо ниво.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf
index bff1c8b441e2c..9fd444a59efff 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.bs.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Ova vrijednost nije valjana MAC adresa.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Ovom URL-u nedostaje domena najvišeg nivoa.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf
index 2f301e784ac03..652c0a48d693c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ca.xlf
@@ -108,7 +108,7 @@
             </trans-unit>
             <trans-unit id="27">
                 <source>This value is not a valid URL.</source>
-                <target>Aquest valor no és una URL vàlida.</target>
+                <target>Aquest valor no és un URL vàlid.</target>
             </trans-unit>
             <trans-unit id="31">
                 <source>The two values should be equal.</source>
@@ -116,7 +116,7 @@
             </trans-unit>
             <trans-unit id="32">
                 <source>The file is too large. Allowed maximum size is {{ limit }} {{ suffix }}.</source>
-                <target>L'arxiu és massa gran. El tamany màxim permés és {{ limit }} {{ suffix }}.</target>
+                <target>L'arxiu és massa gran. La mida màxima permesa és {{ limit }} {{ suffix }}.</target>
             </trans-unit>
             <trans-unit id="33">
                 <source>The file is too large.</source>
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Aquest valor no és una adreça IP vàlida.</target>
+                <target>Aquest valor no és una adreça IP vàlida.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -160,19 +160,19 @@
             </trans-unit>
             <trans-unit id="43">
                 <source>The image width is too big ({{ width }}px). Allowed maximum width is {{ max_width }}px.</source>
-                <target>L'amplària de la imatge és massa gran ({{ width }}px). L'amplària màxima permesa són {{ max_width }}px.</target>
+                <target>L'amplària de la imatge és massa gran ({{ width }}px). L'amplària màxima permesa és {{ max_width }}px.</target>
             </trans-unit>
             <trans-unit id="44">
                 <source>The image width is too small ({{ width }}px). Minimum width expected is {{ min_width }}px.</source>
-                <target>L'amplària de la imatge és massa petita ({{ width }}px). L'amplària mínima requerida són {{ min_width }}px.</target>
+                <target>L'amplària de la imatge és massa petita ({{ width }}px). L'amplària mínima requerida és {{ min_width }}px.</target>
             </trans-unit>
             <trans-unit id="45">
                 <source>The image height is too big ({{ height }}px). Allowed maximum height is {{ max_height }}px.</source>
-                <target>L'altura de la imatge és massa gran ({{ height }}px). L'altura màxima permesa són {{ max_height }}px.</target>
+                <target>L'altura de la imatge és massa gran ({{ height }}px). L'altura màxima permesa és {{ max_height }}px.</target>
             </trans-unit>
             <trans-unit id="46">
                 <source>The image height is too small ({{ height }}px). Minimum height expected is {{ min_height }}px.</source>
-                <target>L'altura de la imatge és massa petita ({{ height }}px). L'altura mínima requerida són {{ min_height }}px.</target>
+                <target>L'altura de la imatge és massa petita ({{ height }}px). L'altura mínima requerida és {{ min_height }}px.</target>
             </trans-unit>
             <trans-unit id="47">
                 <source>This value should be the user's current password.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">No s'ha configurat cap carpeta temporal en php.ini, o la carpeta configurada no existeix.</target>
+                <target>No s'ha configurat cap carpeta temporal en php.ini, o la carpeta configurada no existeix.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -200,7 +200,7 @@
             </trans-unit>
             <trans-unit id="53">
                 <source>A PHP extension caused the upload to fail.</source>
-                <target>Una extensió de PHP va fer que la pujada fallara.</target>
+                <target>Una extensió de PHP va fer que la pujada fallarà.</target>
             </trans-unit>
             <trans-unit id="54">
                 <source>This collection should contain {{ limit }} element or more.|This collection should contain {{ limit }} elements or more.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Aquest valor no és un Número de Compte Bancari Internacional (IBAN) vàlid.</target>
+                <target>Aquest valor no és un Número de Compte Bancari Internacional (IBAN) vàlid.</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -276,31 +276,31 @@
             </trans-unit>
             <trans-unit id="72">
                 <source>This value should not be identical to {{ compared_value_type }} {{ compared_value }}.</source>
-                <target>Aquest valor no hauria de idèntic a {{ compared_value_type }} {{ compared_value }}.</target>
+                <target>Aquest valor no hauria de ser idèntic a {{ compared_value_type }} {{ compared_value }}.</target>
             </trans-unit>
             <trans-unit id="73">
                 <source>The image ratio is too big ({{ ratio }}). Allowed maximum ratio is {{ max_ratio }}.</source>
-                <target>La proporció de l'imatge és massa gran ({{ ratio }}). La màxima proporció permesa és {{ max_ratio }}.</target>
+                <target>La proporció de la imatge és massa gran ({{ ratio }}). La màxima proporció permesa és {{ max_ratio }}.</target>
             </trans-unit>
             <trans-unit id="74">
                 <source>The image ratio is too small ({{ ratio }}). Minimum ratio expected is {{ min_ratio }}.</source>
-                <target>La proporció de l'imatge és massa petita ({{ ratio }}). La mínima proporció permesa és {{ max_ratio }}.</target>
+                <target>La proporció de la imatge és massa petita ({{ ratio }}). La mínima proporció permesa és {{ min_ratio }}.</target>
             </trans-unit>
             <trans-unit id="75">
                 <source>The image is square ({{ width }}x{{ height }}px). Square images are not allowed.</source>
-                <target>L'imatge és quadrada({{ width }}x{{ height }}px). Les imatges quadrades no estan permeses.</target>
+                <target>La imatge és quadrada({{ width }}x{{ height }}px). Les imatges quadrades no estan permeses.</target>
             </trans-unit>
             <trans-unit id="76">
                 <source>The image is landscape oriented ({{ width }}x{{ height }}px). Landscape oriented images are not allowed.</source>
-                <target>L'imatge està orientada horitzontalment ({{ width }}x{{ height }}px). Les imatges orientades horitzontalment no estan permeses.</target>
+                <target>La imatge està orientada horitzontalment ({{ width }}x{{ height }}px). Les imatges orientades horitzontalment no estan permeses.</target>
             </trans-unit>
             <trans-unit id="77">
                 <source>The image is portrait oriented ({{ width }}x{{ height }}px). Portrait oriented images are not allowed.</source>
-                <target>L'imatge està orientada verticalment ({{ width }}x{{ height }}px). Les imatges orientades verticalment no estan permeses.</target>
+                <target>La imatge està orientada verticalment ({{ width }}x{{ height }}px). Les imatges orientades verticalment no estan permeses.</target>
             </trans-unit>
             <trans-unit id="78">
                 <source>An empty file is not allowed.</source>
-                <target>No està permès un fixter buit.</target>
+                <target>No està permès un fitxer buit.</target>
             </trans-unit>
             <trans-unit id="79">
                 <source>The host could not be resolved.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Aquest valor no és un Codi d'Identificador de Negocis (BIC) vàlid.</target>
+                <target>Aquest valor no és un Codi d'identificació bancari (BIC) vàlid.</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Aquest valor no és un UUID vàlid.</target>
+                <target>Aquest valor no és un UUID vàlid.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -428,15 +428,19 @@
             </trans-unit>
             <trans-unit id="110">
                 <source>The extension of the file is invalid ({{ extension }}). Allowed extensions are {{ extensions }}.</source>
-                <target state="needs-review-translation">L'extensió del fitxer no és vàlida ({{ extension }}). Les extensions permeses són {{ extensions }}.</target>
+                <target>L'extensió del fitxer no és vàlida ({{ extension }}). Les extensions permeses són {{ extensions }}.</target>
             </trans-unit>
             <trans-unit id="111">
                 <source>The detected character encoding is invalid ({{ detected }}). Allowed encodings are {{ encodings }}.</source>
-                <target state="needs-review-translation">S'ha detectat que la codificació de caràcters no és vàlida ({{ detected }}). Les codificacions permeses són {{ encodings }}.</target>
+                <target>S'ha detectat que la codificació de caràcters no és vàlida ({{ detected }}). Les codificacions permeses són {{ encodings }}.</target>
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Aquest valor no és una adreça MAC vàlida.</target>
+                <target>Aquest valor no és una adreça MAC vàlida.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Aquesta URL no conté un domini de primer nivell.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf
index 9ca83564ebadc..2c4c54d9f60af 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.cs.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Tato hodnota není platnou MAC adresou.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Této URL chybí doména nejvyššího řádu.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf
index fd984989e3597..a1ebdf7f81e24 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.cy.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Nid yw'r gwerth hwn yn gyfeiriad MAC dilys.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Mae'r URL hwn yn colli parth lefel uchaf.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf
index 826ef10c955db..808d8c6ad66d9 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.da.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne værdi er ikke en gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL mangler et topdomæne.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf
index 9f145fdeed911..3b65306314922 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.de.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Dieser Wert ist keine gültige MAC-Adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Dieser URL fehlt eine Top-Level-Domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf
index db927e1d51e65..a60471835745b 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.el.xlf
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target >Αυτή η IP διεύθυνση δεν είναι έγκυρη.</target>
+                <target>Αυτή η IP διεύθυνση δεν είναι έγκυρη.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target >Αυτός ο αριθμός δεν είναι έγκυρη UUID.</target>
+                <target>Αυτός ο αριθμός δεν είναι έγκυρη UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Αυτός ο αριθμός δεν είναι έγκυρη διεύθυνση MAC.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Αυτή η διεύθυνση URL λείπει ένας τομέας ανώτατου επιπέδου.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf
index 35196e572e0f0..721139011caec 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.en.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>This value is not a valid MAC address.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>This URL is missing a top-level domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf
index abe75d5304ae3..d58045471c70c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.es.xlf
@@ -404,7 +404,7 @@
             </trans-unit>
             <trans-unit id="104">
                 <source>The filename is too long. It should have {{ filename_max_length }} character or less.|The filename is too long. It should have {{ filename_max_length }} characters or less.</source>
-                <target>El nombre del archivo es demasido largo. Debe tener {{ filename_max_length }} carácter o menos.|El nombre del archivo es demasido largo. Debe tener {{ filename_max_length }} caracteres o menos.</target>
+                <target>El nombre del archivo es demasiado largo. Debe tener {{ filename_max_length }} carácter o menos.|El nombre del archivo es demasiado largo. Debe tener {{ filename_max_length }} caracteres o menos.</target>
             </trans-unit>
             <trans-unit id="105">
                 <source>The password strength is too low. Please use a stronger password.</source>
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Este valor no es una dirección MAC válida.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Esta URL no contiene una extensión de dominio (TLD).</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf
index 0af593467f591..d9d641322976b 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.et.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>See väärtus ei ole kehtiv MAC-aadress.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Sellel URL-il puudub ülataseme domeen.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf
index 6094d1cbca575..bdcbaa393e6a1 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.eu.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Balio hau ez da MAC helbide baliozko bat.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">URL honek ez du goi-mailako domeinurik.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf
index 1db553c9ffb18..0f2cf5bbf1fed 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.fa.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">این مقدار یک آدرس MAC معتبر نیست.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">این URL فاقد دامنه سطح بالا است.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf
index 324df2c276b79..e9ca6c83347a6 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.fi.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Tämä arvo ei ole kelvollinen MAC-osoite.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Tästä URL-osoitteesta puuttuu ylätason verkkotunnus.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf
index e2d747a49bffe..4e949d838cae7 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.fr.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Cette valeur n'est pas une adresse MAC valide.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Cette URL doit contenir un domaine de premier niveau.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf
index 2723983c5a99d..2a1199bed5c71 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.gl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Este valor non é un enderezo MAC válido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Esta URL non contén un dominio de nivel superior.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf
index b1bb894a7fe4b..cd406b4eb86c8 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.he.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">ערך זה אינו כתובת MAC תקפה.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">לכתובת URL זו חסר דומיין רמה עליונה.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf
index eed237ce27e40..a7542a9353293 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.hr.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ova vrijednost nije valjana MAC adresa.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Ovom URL-u nedostaje vršna domena.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf
index df39afd709671..a31848c775fde 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.hu.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ez az érték nem érvényes MAC-cím.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Az URL-ből hiányzik a legfelső szintű tartomány (top-level domain).</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf
index 707301d18c037..d8ff322e6ed76 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.hy.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Այս արժեքը վավեր MAC հասցե չէ։</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Այս URL-ը չունի վերին մակարդակի դոմեյն:</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf
index 1cc60c4d8f9a2..b894c69d855d6 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.id.xlf
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">Tidak ada folder sementara yang dikonfigurasi di php.ini, atau folder yang dikonfigurasi tidak ada.</target>
+                <target>Tidak ada folder sementara yang dikonfigurasi di php.ini, atau folder yang dikonfigurasi tidak ada.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Nilai ini bukan alamat MAC yang valid.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>URL ini tidak memiliki domain tingkat atas.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf
index bd7b25882d82c..74f3a75b0c97e 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.it.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Questo valore non è un indirizzo MAC valido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Questo URL è privo di un dominio di primo livello.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
index 0524cd0511e15..c977df4a3e186 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">この値は有効なMACアドレスではありません。</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">このURLはトップレベルドメインがありません。</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf
index 548d82da41683..28d1eff019aac 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.lb.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Dëse Wäert ass keng gülteg MAC-Adress.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Dësen URL feelt eng Top-Level-Domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf
index b3ee199fe4c73..e16daea93b80f 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.lt.xlf
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis IP adresas.</target>
+                <target>Ši reikšmė nėra tinkamas IP adresas.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">php.ini nesukonfigūruotas laikinas aplankas, arba sukonfigūruotas aplankas neegzistuoja.</target>
+                <target>php.ini nesukonfigūruotas laikinas aplankas arba sukonfigūruotas aplankas neegzistuoja.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis Tarptautinis Banko Sąskaitos Numeris (IBAN).</target>
+                <target>Ši reikšmė nėra tinkamas Tarptautinis Banko Sąskaitos Numeris (IBAN).</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis Verslo Identifikavimo Kodas (BIC).</target>
+                <target>Ši reikšmė nėra tinkamas Verslo Identifikavimo Kodas (BIC).</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis UUID.</target>
+                <target>Ši reikšmė nėra tinkamas UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -432,11 +432,15 @@
             </trans-unit>
             <trans-unit id="111">
                 <source>The detected character encoding is invalid ({{ detected }}). Allowed encodings are {{ encodings }}.</source>
-                <target state="needs-review-translation">Nustatyta simbolių koduotė yra netinkama ({{ detected }}). Leidžiamos koduotės yra {{ encodings }}.</target>
+                <target>Aptikta simbolių koduotė yra netinkama ({{ detected }}). Leidžiamos koduotės yra {{ encodings }}.</target>
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Ši vertė nėra galiojantis MAC adresas.</target>
+                <target>Ši reikšmė nėra tinkamas MAC adresas.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Šiam URL trūksta aukščiausio lygio domeno.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf
index d1222f02b72a5..66e370fea944d 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.lv.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Šī vērtība nav derīga MAC adrese.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Šim URL trūkst augšējā līmeņa domēna.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf
index 9d6dec6288b8a..d941f59ea8c8c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.mk.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Оваа вредност не е валидна MAC адреса.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">На овој URL недостасува домен од највисоко ниво.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf
index 4984bb127cab1..4f997a7031592 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.mn.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Энэ утга хүчинтэй MAC хаяг биш юм.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Энэ URL дээд түвшингийн домейн дутуу байна.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf
index e4858336c1c7d..57b6e276dc9c5 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.my.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">ဤတန်ဖိုးသည် မှန်ကန်သော MAC လိပ်စာ မဟုတ်ပါ။</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">ဤ URL တွင် အမြင့်ဆုံးအဆင့်ဒိုမိန်း ပါဝင်မရှိပါ။</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf
index 8b317449ef4e8..27a4d3c55a1ef 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.nb.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne verdien er ikke en gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL-en mangler et toppnivådomene.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf
index 81d57cab48eec..7596799d0d904 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.nl.xlf
@@ -64,11 +64,11 @@
             </trans-unit>
             <trans-unit id="16">
                 <source>The file is too large ({{ size }} {{ suffix }}). Allowed maximum size is {{ limit }} {{ suffix }}.</source>
-                <target>Het bestand is te groot ({{ size }} {{ suffix }}). Toegestane maximum grootte is {{ limit }} {{ suffix }}.</target>
+                <target>Het bestand is te groot ({{ size }} {{ suffix }}). De maximale grootte is {{ limit }} {{ suffix }}.</target>
             </trans-unit>
             <trans-unit id="17">
                 <source>The mime type of the file is invalid ({{ type }}). Allowed mime types are {{ types }}.</source>
-                <target>Het mime type van het bestand is ongeldig ({{ type }}). Toegestane mime types zijn {{ types }}.</target>
+                <target>Het mediatype van het bestand is ongeldig ({{ type }}). De toegestane mediatypes zijn {{ types }}.</target>
             </trans-unit>
             <trans-unit id="18">
                 <source>This value should be {{ limit }} or less.</source>
@@ -116,7 +116,7 @@
             </trans-unit>
             <trans-unit id="32">
                 <source>The file is too large. Allowed maximum size is {{ limit }} {{ suffix }}.</source>
-                <target>Het bestand is te groot. Toegestane maximum grootte is {{ limit }} {{ suffix }}.</target>
+                <target>Het bestand is te groot. De maximale grootte is {{ limit }} {{ suffix }}.</target>
             </trans-unit>
             <trans-unit id="33">
                 <source>The file is too large.</source>
@@ -144,7 +144,7 @@
             </trans-unit>
             <trans-unit id="39">
                 <source>This value is not a valid locale.</source>
-                <target>Deze waarde is geen geldige locale.</target>
+                <target>Deze waarde is geen geldige landinstelling.</target>
             </trans-unit>
             <trans-unit id="40">
                 <source>This value is not a valid country.</source>
@@ -160,7 +160,7 @@
             </trans-unit>
             <trans-unit id="43">
                 <source>The image width is too big ({{ width }}px). Allowed maximum width is {{ max_width }}px.</source>
-                <target>De afbeelding is te breed ({{ width }}px). De maximaal toegestane breedte is {{ max_width }}px.</target>
+                <target>De afbeelding is te breed ({{ width }}px). De maximaal breedte is {{ max_width }}px.</target>
             </trans-unit>
             <trans-unit id="44">
                 <source>The image width is too small ({{ width }}px). Minimum width expected is {{ min_width }}px.</source>
@@ -168,7 +168,7 @@
             </trans-unit>
             <trans-unit id="45">
                 <source>The image height is too big ({{ height }}px). Allowed maximum height is {{ max_height }}px.</source>
-                <target>De afbeelding is te hoog ({{ height }}px). De maximaal toegestane hoogte is {{ max_height }}px.</target>
+                <target>De afbeelding is te hoog ({{ height }}px). De maximaal hoogte is {{ max_height }}px.</target>
             </trans-unit>
             <trans-unit id="46">
                 <source>The image height is too small ({{ height }}px). Minimum height expected is {{ min_height }}px.</source>
@@ -280,11 +280,11 @@
             </trans-unit>
             <trans-unit id="73">
                 <source>The image ratio is too big ({{ ratio }}). Allowed maximum ratio is {{ max_ratio }}.</source>
-                <target>De afbeeldingsverhouding is te groot ({{ ratio }}). Maximale verhouding is {{ max_ratio }}.</target>
+                <target>De afbeeldingsverhouding is te groot ({{ ratio }}). De maximale verhouding is {{ max_ratio }}.</target>
             </trans-unit>
             <trans-unit id="74">
                 <source>The image ratio is too small ({{ ratio }}). Minimum ratio expected is {{ min_ratio }}.</source>
-                <target>De afbeeldingsverhouding is te klein ({{ ratio }}). Minimale verhouding is {{ min_ratio }}.</target>
+                <target>De afbeeldingsverhouding is te klein ({{ ratio }}). De minimale verhouding is {{ min_ratio }}.</target>
             </trans-unit>
             <trans-unit id="75">
                 <source>The image is square ({{ width }}x{{ height }}px). Square images are not allowed.</source>
@@ -324,7 +324,7 @@
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
-                <target>Deze waarde zou een meervoud van {{ compared_value }} moeten zijn.</target>
+                <target>Deze waarde moet een meervoud van {{ compared_value }} zijn.</target>
             </trans-unit>
             <trans-unit id="85">
                 <source>This Business Identifier Code (BIC) is not associated with IBAN {{ iban }}.</source>
@@ -336,7 +336,7 @@
             </trans-unit>
             <trans-unit id="87">
                 <source>This collection should contain only unique elements.</source>
-                <target>Deze collectie moet alleen unieke elementen bevatten.</target>
+                <target>Deze collectie mag alleen unieke elementen bevatten.</target>
             </trans-unit>
             <trans-unit id="88">
                 <source>This value should be positive.</source>
@@ -396,7 +396,7 @@
             </trans-unit>
             <trans-unit id="102">
                 <source>This value is not a valid CIDR notation.</source>
-                <target>Deze waarde is geen geldige CIDR notatie.</target>
+                <target>Deze waarde is geen geldige CIDR-notatie.</target>
             </trans-unit>
             <trans-unit id="103">
                 <source>The value of the netmask should be between {{ min }} and {{ max }}.</source>
@@ -404,11 +404,11 @@
             </trans-unit>
             <trans-unit id="104">
                 <source>The filename is too long. It should have {{ filename_max_length }} character or less.|The filename is too long. It should have {{ filename_max_length }} characters or less.</source>
-                <target>De bestandsnaam is te lang. Het moet {{ filename_max_length }} karakter of minder zijn.</target>
+                <target>De bestandsnaam is te lang. Het moet {{ filename_max_length }} karakter of minder zijn.|De bestandsnaam is te lang. Het moet {{ filename_max_length }} karakters of minder zijn.</target>
             </trans-unit>
             <trans-unit id="105">
                 <source>The password strength is too low. Please use a stronger password.</source>
-                <target>De wachtwoordsterkte is te laag. Gebruik alstublieft een sterker wachtwoord.</target>
+                <target>Het wachtwoord is niet sterk genoeg. Probeer een sterker wachtwoord.</target>
             </trans-unit>
             <trans-unit id="106">
                 <source>This value contains characters that are not allowed by the current restriction-level.</source>
@@ -428,16 +428,20 @@
             </trans-unit>
             <trans-unit id="110">
                 <source>The extension of the file is invalid ({{ extension }}). Allowed extensions are {{ extensions }}.</source>
-                <target>De extensie van het bestand is ongeldig ({{ extension }}). Toegestane extensies zijn {{ extensions }}.</target>
+                <target>De bestandsextensie is ongeldig ({{ extension }}). De toegestane extensies zijn {{ extensions }}.</target>
             </trans-unit>
             <trans-unit id="111">
                 <source>The detected character encoding is invalid ({{ detected }}). Allowed encodings are {{ encodings }}.</source>
-                <target>De gedetecteerde karaktercodering is ongeldig ({{ detected }}). Toegestane coderingen zijn {{ encodings }}.</target>
+                <target>De gedetecteerde karaktercodering is ongeldig ({{ detected }}). De toegestane coderingen zijn {{ encodings }}.</target>
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
                 <target>Deze waarde is geen geldig MAC-adres.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Deze URL mist een top-level domein.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf
index 4e1a41dab84d7..de400b7d5115c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.nn.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne verdien er ikkje ein gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL-en manglar eit toppnivådomene.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf
index 8b317449ef4e8..27a4d3c55a1ef 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.no.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Denne verdien er ikke en gyldig MAC-adresse.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denne URL-en mangler et toppnivådomene.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf
index 29180984e6dfb..42b6e9571b349 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.pl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ta wartość nie jest prawidłowym adresem MAC.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Podany URL nie zawiera domeny najwyższego poziomu.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf
index 5861a6d1434c6..ed28ee31ea639 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.pt.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Este valor não é um endereço MAC válido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Esta URL está faltando um domínio de topo.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf
index 4372885085282..e5fe095eace75 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.pt_BR.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Este valor não é um endereço MAC válido.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Esta URL está faltando um domínio de topo.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf
index 426f6319cee20..3d0b819a95441 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ro.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Această valoare nu este o adresă MAC validă.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Acest URL îi lipsește un domeniu de nivel superior.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf
index 22900d5c266b5..dbee06a984b2c 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ru.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Это значение не является действительным MAC-адресом.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>В этом URL отсутствует домен верхнего уровня.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf
index 9b06bdfb8c12e..8886395e6e8c7 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sk.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Táto hodnota nie je platnou MAC adresou.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Tomuto URL chýba doména najvyššej úrovne.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf
index 596a66166cf4d..03e750b8af75b 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ta vrednost ni veljaven MAC naslov.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Temu URL manjka domena najvišje ravni.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf
index 3ac3603144ca2..e9b31b88258d9 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sq.xlf
@@ -447,6 +447,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Kjo nuk është një adresë e vlefshme e Kontrollit të Qasjes në Media (MAC).</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Kësaj URL i mungon një domain i nivelit të lartë.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf
index b73cde9bac4a9..0550626d03f4d 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Cyrl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Ова вредност није валидна MAC адреса.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Овом URL недостаје домен највишег нивоа.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf
index cd4ccfb3f3c03..5a85bd764d3cc 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sr_Latn.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Ova vrednost nije validna MAC adresa.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Ovom URL nedostaje domen najvišeg nivoa.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf
index ec106fa78ebb7..d7be868c10e96 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.sv.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target>Värdet är inte en giltig MAC-adress.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Denna URL saknar en toppdomän.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf
index f109024bfeaf3..0d811ed040f88 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.th.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">ค่านี้ไม่ใช่ที่อยู่ MAC ที่ถูกต้อง</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">URL นี้ขาดโดเมนระดับสูงสุด.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf
index 632efbc3f3f95..8e8146a0faade 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.tl.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Ang halagang ito ay hindi isang wastong MAC address.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Kulang ang URL na ito sa top-level domain.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf
index 4d66ce8bcbc58..3553af7b74ddd 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.tr.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Bu değer geçerli bir MAC adresi değil.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Bu URL bir üst düzey alan adı eksik.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf
index fcf63e0f675f3..7b9918910b151 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.uk.xlf
@@ -136,7 +136,7 @@
             </trans-unit>
             <trans-unit id="37" resname="This is not a valid IP address.">
                 <source>This value is not a valid IP address.</source>
-                <target state="needs-review-translation">Це значення не є дійсною IP-адресою.</target>
+                <target>Це значення не є дійсною IP-адресою.</target>
             </trans-unit>
             <trans-unit id="38">
                 <source>This value is not a valid language.</source>
@@ -192,7 +192,7 @@
             </trans-unit>
             <trans-unit id="51" resname="No temporary folder was configured in php.ini.">
                 <source>No temporary folder was configured in php.ini, or the configured folder does not exist.</source>
-                <target state="needs-review-translation">У php.ini не було налаштовано тимчасової теки, або налаштована тека не існує.</target>
+                <target>У php.ini не було налаштовано тимчасової теки, або налаштована тека не існує.</target>
             </trans-unit>
             <trans-unit id="52">
                 <source>Cannot write temporary file to disk.</source>
@@ -224,7 +224,7 @@
             </trans-unit>
             <trans-unit id="59" resname="This is not a valid International Bank Account Number (IBAN).">
                 <source>This value is not a valid International Bank Account Number (IBAN).</source>
-                <target state="needs-review-translation">Це значення не є дійсним Міжнародним банківським рахунком (IBAN).</target>
+                <target>Це значення не є дійсним міжнародним номером банківського рахунку (IBAN).</target>
             </trans-unit>
             <trans-unit id="60">
                 <source>This value is not a valid ISBN-10.</source>
@@ -312,7 +312,7 @@
             </trans-unit>
             <trans-unit id="81" resname="This is not a valid Business Identifier Code (BIC).">
                 <source>This value is not a valid Business Identifier Code (BIC).</source>
-                <target state="needs-review-translation">Це значення не є дійсним Кодом ідентифікації бізнесу (BIC).</target>
+                <target>Це значення не є дійсним банківським кодом (BIC).</target>
             </trans-unit>
             <trans-unit id="82">
                 <source>Error</source>
@@ -320,7 +320,7 @@
             </trans-unit>
             <trans-unit id="83" resname="This is not a valid UUID.">
                 <source>This value is not a valid UUID.</source>
-                <target state="needs-review-translation">Це значення не є дійсним UUID.</target>
+                <target>Це значення не є дійсним UUID.</target>
             </trans-unit>
             <trans-unit id="84">
                 <source>This value should be a multiple of {{ compared_value }}.</source>
@@ -436,7 +436,11 @@
             </trans-unit>
             <trans-unit id="112">
                 <source>This value is not a valid MAC address.</source>
-                <target state="needs-review-translation">Це значення не є дійсною MAC-адресою.</target>
+                <target>Це значення не є дійсною MAC-адресою.</target>
+            </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target>Цьому URL не вистачає домену верхнього рівня.</target>
             </trans-unit>
         </body>
     </file>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf
index 65719c64ebc4a..f994cb57a84e2 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.ur.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">یہ قیمت کوئی درست MAC پتہ نہیں ہے۔</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">اس URL میں ٹاپ لیول ڈومین موجود نہیں ہے۔</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf
index bf5a2d5f4d9de..1e43fb0fff8cf 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.uz.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Bu qiymat haqiqiy MAC manzil emas.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">Bu URL yuqori darajali domenni o'z ichiga olmaydi.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf
index eadf61467c8bc..b3073cc7370a0 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.vi.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">Giá trị này không phải là địa chỉ MAC hợp lệ.</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">URL này thiếu miền cấp cao.</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf
index 155871cd38df4..fabf86d3b0e13 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.zh_CN.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">该值不是有效的MAC地址。</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">此URL缺少顶级域名。</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf b/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf
index 1a90678627e97..feee108a1bd3d 100644
--- a/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf
+++ b/src/Symfony/Component/Validator/Resources/translations/validators.zh_TW.xlf
@@ -438,6 +438,10 @@
                 <source>This value is not a valid MAC address.</source>
                 <target state="needs-review-translation">這不是一個有效的MAC地址。</target>
             </trans-unit>
+            <trans-unit id="113">
+                <source>This URL is missing a top-level domain.</source>
+                <target state="needs-review-translation">此URL缺少頂級域名。</target>
+            </trans-unit>
         </body>
     </file>
 </xliff>
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
index b6f710ffc7ad2..8489f9cfecb62 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
@@ -40,6 +40,13 @@ public function testUnknownModesTriggerException()
         new Email(['mode' => 'Unknown Mode']);
     }
 
+    public function testUnknownModeArgumentsTriggerException()
+    {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('The "mode" parameter value is not valid.');
+        new Email(null, null, 'Unknown Mode');
+    }
+
     public function testNormalizerCanBeSet()
     {
         $email = new Email(['normalizer' => 'trim']);
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/RangeTest.php b/src/Symfony/Component/Validator/Tests/Constraints/RangeTest.php
index 132be131d4073..a306b104a5763 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/RangeTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/RangeTest.php
@@ -30,7 +30,7 @@ public function testThrowsConstraintExceptionIfBothMinLimitAndPropertyPath()
 
     public function testThrowsConstraintExceptionIfBothMinLimitAndPropertyPathNamed()
     {
-        $this->expectException(\Symfony\Component\Validator\Exception\ConstraintDefinitionException::class);
+        $this->expectException(ConstraintDefinitionException::class);
         $this->expectExceptionMessage('requires only one of the "min" or "minPropertyPath" options to be set, not both.');
         new Range(min: 'min', minPropertyPath: 'minPropertyPath');
     }
@@ -47,7 +47,7 @@ public function testThrowsConstraintExceptionIfBothMaxLimitAndPropertyPath()
 
     public function testThrowsConstraintExceptionIfBothMaxLimitAndPropertyPathNamed()
     {
-        $this->expectException(\Symfony\Component\Validator\Exception\ConstraintDefinitionException::class);
+        $this->expectException(ConstraintDefinitionException::class);
         $this->expectExceptionMessage('requires only one of the "max" or "maxPropertyPath" options to be set, not both.');
         new Range(max: 'max', maxPropertyPath: 'maxPropertyPath');
     }
@@ -65,10 +65,58 @@ public function testThrowsNoDefaultOptionConfiguredException()
         new Range('value');
     }
 
-    public function testThrowsConstraintDefinitionExceptionIfBothMinAndMaxAndMinMessageOrMaxMessage()
+    public function testThrowsConstraintDefinitionExceptionIfBothMinAndMaxAndMinMessageAndMaxMessage()
     {
-        $this->expectException(\Symfony\Component\Validator\Exception\ConstraintDefinitionException::class);
+        $this->expectException(ConstraintDefinitionException::class);
         $this->expectExceptionMessage('can not use "minMessage" and "maxMessage" when the "min" and "max" options are both set. Use "notInRangeMessage" instead.');
         new Range(min: 'min', max: 'max', minMessage: 'minMessage', maxMessage: 'maxMessage');
     }
+
+    public function testThrowsConstraintDefinitionExceptionIfBothMinAndMaxAndMinMessage()
+    {
+        $this->expectException(ConstraintDefinitionException::class);
+        $this->expectExceptionMessage('can not use "minMessage" and "maxMessage" when the "min" and "max" options are both set. Use "notInRangeMessage" instead.');
+        new Range(min: 'min', max: 'max', minMessage: 'minMessage');
+    }
+
+    public function testThrowsConstraintDefinitionExceptionIfBothMinAndMaxAndMaxMessage()
+    {
+        $this->expectException(ConstraintDefinitionException::class);
+        $this->expectExceptionMessage('can not use "minMessage" and "maxMessage" when the "min" and "max" options are both set. Use "notInRangeMessage" instead.');
+        new Range(min: 'min', max: 'max', maxMessage: 'maxMessage');
+    }
+
+    public function testThrowsConstraintDefinitionExceptionIfBothMinAndMaxAndMinMessageAndMaxMessageOptions()
+    {
+        $this->expectException(ConstraintDefinitionException::class);
+        $this->expectExceptionMessage('can not use "minMessage" and "maxMessage" when the "min" and "max" options are both set. Use "notInRangeMessage" instead.');
+        new Range([
+            'min' => 'min',
+            'minMessage' => 'minMessage',
+            'max' => 'max',
+            'maxMessage' => 'maxMessage',
+        ]);
+    }
+
+    public function testThrowsConstraintDefinitionExceptionIfBothMinAndMaxAndMinMessageOptions()
+    {
+        $this->expectException(ConstraintDefinitionException::class);
+        $this->expectExceptionMessage('can not use "minMessage" and "maxMessage" when the "min" and "max" options are both set. Use "notInRangeMessage" instead.');
+        new Range([
+            'min' => 'min',
+            'minMessage' => 'minMessage',
+            'max' => 'max',
+        ]);
+    }
+
+    public function testThrowsConstraintDefinitionExceptionIfBothMinAndMaxAndMaxMessageOptions()
+    {
+        $this->expectException(ConstraintDefinitionException::class);
+        $this->expectExceptionMessage('can not use "minMessage" and "maxMessage" when the "min" and "max" options are both set. Use "notInRangeMessage" instead.');
+        new Range([
+            'min' => 'min',
+            'max' => 'max',
+            'maxMessage' => 'maxMessage',
+        ]);
+    }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php
index 876595c37fc94..c0eb5e61703a9 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php
@@ -1037,30 +1037,6 @@ public static function provideMessageIfMinAndMaxSet(): array
                 'not_in_range_message',
                 Range::NOT_IN_RANGE_ERROR,
             ],
-            [
-                ['minMessage' => 'min_message'],
-                0,
-                $notInRangeMessage,
-                Range::NOT_IN_RANGE_ERROR,
-            ],
-            [
-                ['maxMessage' => 'max_message'],
-                0,
-                $notInRangeMessage,
-                Range::NOT_IN_RANGE_ERROR,
-            ],
-            [
-                ['minMessage' => 'min_message'],
-                15,
-                $notInRangeMessage,
-                Range::NOT_IN_RANGE_ERROR,
-            ],
-            [
-                ['maxMessage' => 'max_message'],
-                15,
-                $notInRangeMessage,
-                Range::NOT_IN_RANGE_ERROR,
-            ],
         ];
     }
 
diff --git a/src/Symfony/Component/VarDumper/.gitattributes b/src/Symfony/Component/VarDumper/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/VarDumper/.gitattributes
+++ b/src/Symfony/Component/VarDumper/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/VarDumper/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/VarDumper/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/VarDumper/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/VarDumper/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/VarDumper/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/VarDumper/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
index 137917b63e95c..d5802ec0cdc9c 100644
--- a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
@@ -42,7 +42,7 @@ public static function castClosure(\Closure $c, array $a, Stub $stub, bool $isNe
 
         $a = static::castFunctionAbstract($c, $a, $stub, $isNested, $filter);
 
-        if (!str_contains($c->name, '{closure}')) {
+        if (!str_contains($c->name, '{closure')) {
             $stub->class = isset($a[$prefix.'class']) ? $a[$prefix.'class']->value.'::'.$c->name : $c->name;
             unset($a[$prefix.'class']);
         }
diff --git a/src/Symfony/Component/VarExporter/.gitattributes b/src/Symfony/Component/VarExporter/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/VarExporter/.gitattributes
+++ b/src/Symfony/Component/VarExporter/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/VarExporter/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/VarExporter/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/VarExporter/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/VarExporter/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/VarExporter/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/VarExporter/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/WebLink/.gitattributes b/src/Symfony/Component/WebLink/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/WebLink/.gitattributes
+++ b/src/Symfony/Component/WebLink/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/WebLink/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/WebLink/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/WebLink/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/WebLink/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/WebLink/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/WebLink/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Webhook/.gitattributes b/src/Symfony/Component/Webhook/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Webhook/.gitattributes
+++ b/src/Symfony/Component/Webhook/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Webhook/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Webhook/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Webhook/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Webhook/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Webhook/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Webhook/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Workflow/.gitattributes b/src/Symfony/Component/Workflow/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Workflow/.gitattributes
+++ b/src/Symfony/Component/Workflow/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Workflow/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Workflow/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Workflow/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Workflow/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Workflow/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Workflow/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Workflow/DataCollector/WorkflowDataCollector.php b/src/Symfony/Component/Workflow/DataCollector/WorkflowDataCollector.php
index bdb032f5a3151..fd9a45f03ca14 100644
--- a/src/Symfony/Component/Workflow/DataCollector/WorkflowDataCollector.php
+++ b/src/Symfony/Component/Workflow/DataCollector/WorkflowDataCollector.php
@@ -171,7 +171,7 @@ private function summarizeListener(callable $callable, ?string $eventName = null
 
         if ($callable instanceof \Closure) {
             $r = new \ReflectionFunction($callable);
-            if (str_contains($r->name, '{closure}')) {
+            if (str_contains($r->name, '{closure')) {
                 $title = (string) $r;
             } elseif ($class = $r->getClosureCalledClass()) {
                 $title = $class->name.'::'.$r->name.'()';
diff --git a/src/Symfony/Component/Yaml/.gitattributes b/src/Symfony/Component/Yaml/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Component/Yaml/.gitattributes
+++ b/src/Symfony/Component/Yaml/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Yaml/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Component/Yaml/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Component/Yaml/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Component/Yaml/.github/workflows/check-subtree-split.yml b/src/Symfony/Component/Yaml/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Component/Yaml/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 1109f8568dd52..2f6e3a5f6efb5 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -633,12 +633,12 @@ private function getNextEmbedBlock(?int $indentation = null, bool $inSequence =
             }
 
             if ($this->isCurrentLineBlank()) {
-                $data[] = substr($this->currentLine, $newIndent);
+                $data[] = substr($this->currentLine, $newIndent ?? 0);
                 continue;
             }
 
             if ($indent >= $newIndent) {
-                $data[] = substr($this->currentLine, $newIndent);
+                $data[] = substr($this->currentLine, $newIndent ?? 0);
             } elseif ($this->isCurrentLineComment()) {
                 $data[] = $this->currentLine;
             } elseif (0 == $indent) {
diff --git a/src/Symfony/Component/Yaml/Tests/ParserTest.php b/src/Symfony/Component/Yaml/Tests/ParserTest.php
index c34af87388b7f..753d2c126d768 100644
--- a/src/Symfony/Component/Yaml/Tests/ParserTest.php
+++ b/src/Symfony/Component/Yaml/Tests/ParserTest.php
@@ -1475,13 +1475,13 @@ public static function getBinaryData()
 data: !!binary |
     SGVsbG8gd29ybGQ=
 EOT
-    ],
+            ],
             'containing spaces in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVs bG8gd 29ybGQ=
 EOT
-    ],
+            ],
         ];
     }
 
@@ -2957,6 +2957,11 @@ public function testParseIdeographicSpaces()
         ], $this->parser->parse($expected));
     }
 
+    public function testSkipBlankLines()
+    {
+        $this->assertSame(['foo' => [null]], (new Parser())->parse("foo:\n-\n\n"));
+    }
+
     private function assertSameData($expected, $actual)
     {
         $this->assertEquals($expected, $actual);
diff --git a/src/Symfony/Contracts/.gitattributes b/src/Symfony/Contracts/.gitattributes
index 84c7add058fb5..14c3c35940427 100644
--- a/src/Symfony/Contracts/.gitattributes
+++ b/src/Symfony/Contracts/.gitattributes
@@ -1,4 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Cache/.gitattributes b/src/Symfony/Contracts/Cache/.gitattributes
index 3a01b37292e30..825312826d129 100644
--- a/src/Symfony/Contracts/Cache/.gitattributes
+++ b/src/Symfony/Contracts/Cache/.gitattributes
@@ -1,2 +1 @@
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Cache/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Cache/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Cache/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Cache/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Cache/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Cache/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Deprecation/.gitattributes b/src/Symfony/Contracts/Deprecation/.gitattributes
index 3a01b37292e30..825312826d129 100644
--- a/src/Symfony/Contracts/Deprecation/.gitattributes
+++ b/src/Symfony/Contracts/Deprecation/.gitattributes
@@ -1,2 +1 @@
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Deprecation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Deprecation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Deprecation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Deprecation/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Deprecation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Deprecation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/EventDispatcher/.gitattributes b/src/Symfony/Contracts/EventDispatcher/.gitattributes
index 3a01b37292e30..825312826d129 100644
--- a/src/Symfony/Contracts/EventDispatcher/.gitattributes
+++ b/src/Symfony/Contracts/EventDispatcher/.gitattributes
@@ -1,2 +1 @@
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/EventDispatcher/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/EventDispatcher/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/EventDispatcher/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/EventDispatcher/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/HttpClient/.gitattributes b/src/Symfony/Contracts/HttpClient/.gitattributes
index 3a01b37292e30..825312826d129 100644
--- a/src/Symfony/Contracts/HttpClient/.gitattributes
+++ b/src/Symfony/Contracts/HttpClient/.gitattributes
@@ -1,2 +1 @@
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/HttpClient/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/HttpClient/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/HttpClient/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/HttpClient/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/HttpClient/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Service/.gitattributes b/src/Symfony/Contracts/Service/.gitattributes
index 3a01b37292e30..825312826d129 100644
--- a/src/Symfony/Contracts/Service/.gitattributes
+++ b/src/Symfony/Contracts/Service/.gitattributes
@@ -1,2 +1 @@
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Service/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Service/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Service/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Service/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Service/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Service/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }
diff --git a/src/Symfony/Contracts/Translation/.gitattributes b/src/Symfony/Contracts/Translation/.gitattributes
index 3a01b37292e30..825312826d129 100644
--- a/src/Symfony/Contracts/Translation/.gitattributes
+++ b/src/Symfony/Contracts/Translation/.gitattributes
@@ -1,2 +1 @@
-/.gitattributes export-ignore
-/.gitignore export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Contracts/Translation/.github/PULL_REQUEST_TEMPLATE.md b/src/Symfony/Contracts/Translation/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000000000..4689c4dad430e
--- /dev/null
+++ b/src/Symfony/Contracts/Translation/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/symfony/symfony
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!
diff --git a/src/Symfony/Contracts/Translation/.github/workflows/check-subtree-split.yml b/src/Symfony/Contracts/Translation/.github/workflows/check-subtree-split.yml
new file mode 100644
index 0000000000000..16be48bae3113
--- /dev/null
+++ b/src/Symfony/Contracts/Translation/.github/workflows/check-subtree-split.yml
@@ -0,0 +1,37 @@
+name: Check subtree split
+
+on:
+  pull_request_target:
+
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "symfony") {
+            github.rest.issues.createComment({
+              owner: "symfony",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/symfony/symfony
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+
+            github.rest.pulls.update({
+              owner: "symfony",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }