$ git clone -n https://src.fedoraproject.org/rpms/kdiamond.git /var/lib/mock/f40-build-2686686-68067/root/chroot_tmpdir/scmroot/kdiamond
Cloning into '/var/lib/mock/f40-build-2686686-68067/root/chroot_tmpdir/scmroot/kdiamond'...
$ git fetch origin 5200d68e051620b8b552a8b2b394a643ca0687e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdiamond
 * [new ref]         5200d68e051620b8b552a8b2b394a643ca0687e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5200d68 24.02.1