$ git clone -n https://src.fedoraproject.org/rpms/xorg-x11-drv-nouveau.git /var/lib/mock/f31-build-71491-30648/root/thebuilddir/tmp/scmroot/xorg-x11-drv-nouveau
Cloning into '/var/lib/mock/f31-build-71491-30648/root/thebuilddir/tmp/scmroot/xorg-x11-drv-nouveau'...
$ git reset --hard 8ff5036de328dbcce7c1fe4a95037953b61088a2
HEAD is now at 8ff5036 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild