$ git clone -n https://src.fedoraproject.org/rpms/ocaml-perl4caml.git /var/lib/mock/f40-build-2068543-49293/root/chroot_tmpdir/scmroot/ocaml-perl4caml
Cloning into '/var/lib/mock/f40-build-2068543-49293/root/chroot_tmpdir/scmroot/ocaml-perl4caml'...
$ git fetch origin 0f19bc29e6c643684c51a328506dda8b50f39a27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-perl4caml
 * [new ref]         0f19bc29e6c643684c51a328506dda8b50f39a27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f19bc2 OCaml 5.1.1 + s390x code gen fix for Fedora 40