$ git clone -n https://src.fedoraproject.org/rpms/dtkcore.git /var/lib/mock/f41-build-side-1-2817288-32985/root/chroot_tmpdir/scmroot/dtkcore
Cloning into '/var/lib/mock/f41-build-side-1-2817288-32985/root/chroot_tmpdir/scmroot/dtkcore'...
$ git fetch origin 11205557cbd802850fe736e515f0fb5a7be3f288:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dtkcore
 * [new ref]         11205557cbd802850fe736e515f0fb5a7be3f288 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1120555 Rebuild (qt5)