$ git clone -n https://src.fedoraproject.org/rpms/faad2.git /var/lib/mock/f45-build-8631-392/root/chroot_tmpdir/scmroot/faad2
Cloning into '/var/lib/mock/f45-build-8631-392/root/chroot_tmpdir/scmroot/faad2'...
$ git fetch origin 5f51b768ec3682b663f2702ad518640224cb90d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/faad2
 * [new ref]         5f51b768ec3682b663f2702ad518640224cb90d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f51b76 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild