$ git clone -n https://src.fedoraproject.org/rpms/ocaml-sexplib0.git /var/lib/mock/f40-build-2229019-53117/root/chroot_tmpdir/scmroot/ocaml-sexplib0
Cloning into '/var/lib/mock/f40-build-2229019-53117/root/chroot_tmpdir/scmroot/ocaml-sexplib0'...
$ git fetch origin 7f59fcda745480c9c18a1478a3cbe471d470876f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-sexplib0
 * [new ref]         7f59fcda745480c9c18a1478a3cbe471d470876f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f59fcd OCaml 5.1.1 + s390x code gen fix for Fedora 40