$ git clone -n https://src.fedoraproject.org/rpms/receptor.git /var/lib/mock/f41-build-side-1-2768908-32100/root/chroot_tmpdir/scmroot/receptor
Cloning into '/var/lib/mock/f41-build-side-1-2768908-32100/root/chroot_tmpdir/scmroot/receptor'...
$ git fetch origin 307c78a30eaac49970de55bac19871efb901f55f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/receptor
 * [new ref]         307c78a30eaac49970de55bac19871efb901f55f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 307c78a Orphaned for 6+ weeks