$ git clone -n https://src.fedoraproject.org/rpms/cutter.git /var/lib/mock/f40-build-2207558-52086/root/chroot_tmpdir/scmroot/cutter
Cloning into '/var/lib/mock/f40-build-2207558-52086/root/chroot_tmpdir/scmroot/cutter'...
$ git fetch origin 6bd767efbd8d4f704555b8fed36f8209638f7c0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cutter
 * [new ref]         6bd767efbd8d4f704555b8fed36f8209638f7c0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6bd767e Orphaned for 6+ weeks