$ git clone -n https://src.fedoraproject.org/rpms/ocaml-mtime.git /var/lib/mock/f40-build-2097212-50428/root/chroot_tmpdir/scmroot/ocaml-mtime
Cloning into '/var/lib/mock/f40-build-2097212-50428/root/chroot_tmpdir/scmroot/ocaml-mtime'...
$ git fetch origin befbdc74610bb23a0b6023c35c63703c4375b764:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-mtime
 * [new ref]         befbdc74610bb23a0b6023c35c63703c4375b764 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at befbdc7 OCaml 5.1.1 + s390x code gen fix for Fedora 40