$ git clone -n https://src.fedoraproject.org/rpms/gnome-screensaver.git /var/lib/mock/f31-build-65286-29675/root/thebuilddir/tmp/scmroot/gnome-screensaver
Cloning into '/var/lib/mock/f31-build-65286-29675/root/thebuilddir/tmp/scmroot/gnome-screensaver'...
$ git reset --hard 9806441732d3e40c9501759819c72f9465754ebb
HEAD is now at 9806441 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild