$ git clone -n https://src.fedoraproject.org/rpms/arora.git /var/lib/mock/f40-build-2334989-59343/root/chroot_tmpdir/scmroot/arora
Cloning into '/var/lib/mock/f40-build-2334989-59343/root/chroot_tmpdir/scmroot/arora'...
$ git fetch origin c4120b55ae19566887d37f10c0ab876dce9a4079:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arora
 * [new ref]         c4120b55ae19566887d37f10c0ab876dce9a4079 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4120b5 Orphaned for 6+ weeks