$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-base.git /var/lib/mock/f40-build-768106-125196/root/chroot_tmpdir/scmroot/ocaml-ppx-base
Cloning into '/var/lib/mock/f40-build-768106-125196/root/chroot_tmpdir/scmroot/ocaml-ppx-base'...
$ git fetch origin f43ff5e5b8f8d63903e64c554a96cc0a2fe37409:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-base
 * [new ref]         f43ff5e5b8f8d63903e64c554a96cc0a2fe37409 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f43ff5e OCaml 5.1.1 + s390x code gen fix for Fedora 40