$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-deriving-yojson.git /var/lib/mock/f40-build-2160160-50941/root/chroot_tmpdir/scmroot/ocaml-ppx-deriving-yojson
Cloning into '/var/lib/mock/f40-build-2160160-50941/root/chroot_tmpdir/scmroot/ocaml-ppx-deriving-yojson'...
$ git fetch origin 6ef504e0a5ddf722b18a6ab5f7aa0bcce56d9339:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-deriving-yojson
 * [new ref]         6ef504e0a5ddf722b18a6ab5f7aa0bcce56d9339 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ef504e OCaml 5.1.1 + s390x code gen fix for Fedora 40