Is your improvement request related to a problem? Please describe.
It appears that the 'gittools' team maintain the Chocolatey package 'GitVersion' which is makred as 'Obsolete'. Given there is no other gitversion package, I would suggest it points to the 'gitversion.portable' package as it is causing confusion.

Detailed Description

Have the 'gitversion' Chocolatey package have 'gitversion.portable' as a dependency (and therefore act as a 'virtual package'.

Context

If you install the gitversion package you get an obsolete version that is simply a text file.