$ git clone -n https://src.fedoraproject.org/rpms/francis.git /var/lib/mock/f42-build-side-1-3502160-45977/root/chroot_tmpdir/scmroot/francis
Cloning into '/var/lib/mock/f42-build-side-1-3502160-45977/root/chroot_tmpdir/scmroot/francis'...
$ git fetch origin 1efde67e2dea8bab10f5ac53a1a4e33219eb3ea3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/francis
 * [new ref]         1efde67e2dea8bab10f5ac53a1a4e33219eb3ea3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1efde67 25.04.0