$ git clone -n https://src.fedoraproject.org/rpms/plasma-activities-stats.git /var/lib/mock/f42-bootstrap-3533968-46428/root/chroot_tmpdir/scmroot/plasma-activities-stats
Cloning into '/var/lib/mock/f42-bootstrap-3533968-46428/root/chroot_tmpdir/scmroot/plasma-activities-stats'...
$ git fetch origin 5bcf940d882070bc7a384efe491b8c85921cd962:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-activities-stats
 * [new ref]         5bcf940d882070bc7a384efe491b8c85921cd962 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bcf940 6.3.5