New comment by meator on void-packages repository

https://github.com/void-linux/void-packages/issues/47787#issuecomment-1858899634

Comment:
I won't make an effort fixing this because this doesn't affect the functionality of GZDoom. This is only "cosmetic".

If anyone else wants to fix this:
The relevant file is [https://github.com/ZDoom/gzdoom/blob/master/tools/updaterevision/UpdateRevision.cmake](https://github.com/ZDoom/gzdoom/blob/master/tools/updaterevision/UpdateRevision.cmake) (and https://github.com/ZDoom/gzdoom/blob/master/tools/updaterevision/gitinfo.h.in). It uses git to determine the version, hash and timestamp. Git isn't installed on host and the source comes from a tarball and not from git so this mechanism fails and defaults to `<unknown version>`.