$ git clone -n https://src.fedoraproject.org/rpms/ocaml-uunf.git /var/lib/mock/f40-build-768072-125184/root/chroot_tmpdir/scmroot/ocaml-uunf
Cloning into '/var/lib/mock/f40-build-768072-125184/root/chroot_tmpdir/scmroot/ocaml-uunf'...
$ git fetch origin c938a54a5dccd9193ff52b41caf9c42f74516823:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-uunf
 * [new ref]         c938a54a5dccd9193ff52b41caf9c42f74516823 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c938a54 OCaml 5.1.1 + s390x code gen fix for Fedora 40