https://git.gnupg.org/ says:

 Here is a list of shortcuts to often used repositories:

GnuPG
    View the GnuPG modern (2.1) code
    View the GnuPG stable (2.0) code
    View the GnuPG classic (1.4) code
    View the code of the GnuPG Made Easy library

but version 2.0 has been EOL for many months now.

If this is the wrong place to report problems with the website, feel free to redirect this report to the appropriate venue (and let me know so i can address future reports to the right place)