$ git clone -n https://src.fedoraproject.org/rpms/kf6-kfilemetadata.git /var/lib/mock/f40-build-788043-134983/root/chroot_tmpdir/scmroot/kf6-kfilemetadata
Cloning into '/var/lib/mock/f40-build-788043-134983/root/chroot_tmpdir/scmroot/kf6-kfilemetadata'...
$ git fetch origin cbe09c26f5b5213a32fec51a4f214cb9b56da5f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kfilemetadata
 * [new ref]         cbe09c26f5b5213a32fec51a4f214cb9b56da5f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbe09c2 Respin: Rebuild with a new tarball before 6.0.0 release