To further elaborate on what Graf said; ZDoom and GZDoom's development moved to Github a very, very long time ago, abandoning the SVN control system.
These days, it is more common to refer to in-development builds as just that; development builds, or specific "commits". A commit is every single entry you see on
this page.
So, in conclusion, technically, it would have been more correct to say "recent but unknown commit". "Uknown-ish commit". Etc.
To show a specific commit, one would either refer to the commit number as circled here:

Or, going back to that page I linked to, clicking on a specific commit and pasting a direct link to that commit. Like this:
https://github.com/coelckers/gzdoom/com ... 3958a31865Just for your information. :)