$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ocamlgraph.git /var/lib/mock/f42-build-865653-173376/root/chroot_tmpdir/scmroot/ocaml-ocamlgraph
Cloning into '/var/lib/mock/f42-build-865653-173376/root/chroot_tmpdir/scmroot/ocaml-ocamlgraph'...
$ git fetch origin eff48ef102f0425b252e5ea10f2837ed578e19ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ocamlgraph
 * [new ref]         eff48ef102f0425b252e5ea10f2837ed578e19ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eff48ef OCaml 5.3.0 rebuild for Fedora 42