$ git clone -n https://src.fedoraproject.org/rpms/klettres.git /var/lib/mock/f42-build-side-1-3498663-45963/root/chroot_tmpdir/scmroot/klettres
Cloning into '/var/lib/mock/f42-build-side-1-3498663-45963/root/chroot_tmpdir/scmroot/klettres'...
$ git fetch origin 79c9454b0ff92fd581edc4fa54b728a93407d531:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/klettres
 * [new ref]         79c9454b0ff92fd581edc4fa54b728a93407d531 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79c9454 25.04.0