$ git clone -n https://src.fedoraproject.org/rpms/VirtualGL.git /var/lib/mock/f31-build-51695-27527/root/thebuilddir/tmp/scmroot/VirtualGL
Cloning into '/var/lib/mock/f31-build-51695-27527/root/thebuilddir/tmp/scmroot/VirtualGL'...
$ git reset --hard 1020a1e018c1b748168ee3bce6f211ab7aa0aa6d
HEAD is now at 1020a1e - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild