$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv.git /var/lib/mock/f40-build-768322-125293/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv
Cloning into '/var/lib/mock/f40-build-768322-125293/root/chroot_tmpdir/scmroot/ocaml-ppx-variants-conv'...
$ git fetch origin 1c0f6b4319f408eaf7bb34d507ec89dfa0861778:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-variants-conv
 * [new ref]         1c0f6b4319f408eaf7bb34d507ec89dfa0861778 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c0f6b4 OCaml 5.1.1 + s390x code gen fix for Fedora 40