$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ptime.git /var/lib/mock/f40-build-2221269-52681/root/chroot_tmpdir/scmroot/ocaml-ptime
Cloning into '/var/lib/mock/f40-build-2221269-52681/root/chroot_tmpdir/scmroot/ocaml-ptime'...
$ git fetch origin d048ec5549f47fd9a5da8a9758a789a51a8c2d58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ptime
 * [new ref]         d048ec5549f47fd9a5da8a9758a789a51a8c2d58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d048ec5 OCaml 5.1.1 + s390x code gen fix for Fedora 40