$ git clone -n https://src.fedoraproject.org/rpms/plasma-activities-stats.git /var/lib/mock/f42-build-862401-170805/root/chroot_tmpdir/scmroot/plasma-activities-stats
Cloning into '/var/lib/mock/f42-build-862401-170805/root/chroot_tmpdir/scmroot/plasma-activities-stats'...
$ git fetch origin 8531850eab584ba3f313211c1ed11c7e9511750f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-activities-stats
 * [new ref]         8531850eab584ba3f313211c1ed11c7e9511750f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8531850 6.2.4