$ git clone -n https://src.fedoraproject.org/rpms/libgamerzilla.git /var/lib/mock/f45-build-16212-483/root/chroot_tmpdir/scmroot/libgamerzilla
Cloning into '/var/lib/mock/f45-build-16212-483/root/chroot_tmpdir/scmroot/libgamerzilla'...
$ git fetch origin ef948330c0fd77b33c57548b595230f758d0ecf4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgamerzilla
 * [new ref]         ef948330c0fd77b33c57548b595230f758d0ecf4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef94833 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild