$ git clone -n https://src.fedoraproject.org/rpms/spacefm.git /var/lib/mock/f40-build-792094-138075/root/chroot_tmpdir/scmroot/spacefm
Cloning into '/var/lib/mock/f40-build-792094-138075/root/chroot_tmpdir/scmroot/spacefm'...
$ git fetch origin 65753c91cd9aac232e61fbfcf617a9b6534c2890:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/spacefm
 * [new ref]         65753c91cd9aac232e61fbfcf617a9b6534c2890 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65753c9 SPDX migration