$ git clone -n https://src.fedoraproject.org/rpms/ocaml-lwt.git /var/lib/mock/f40-build-768142-125210/root/chroot_tmpdir/scmroot/ocaml-lwt
Cloning into '/var/lib/mock/f40-build-768142-125210/root/chroot_tmpdir/scmroot/ocaml-lwt'...
$ git fetch origin 35781c3f0beace19f17b6b914516c990c83c6095:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-lwt
 * [new ref]         35781c3f0beace19f17b6b914516c990c83c6095 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 35781c3 OCaml 5.1.1 + s390x code gen fix for Fedora 40