$ git clone -n https://src.fedoraproject.org/rpms/ocaml-labltk.git /var/lib/mock/f40-build-767823-125064/root/chroot_tmpdir/scmroot/ocaml-labltk
Cloning into '/var/lib/mock/f40-build-767823-125064/root/chroot_tmpdir/scmroot/ocaml-labltk'...
$ git fetch origin 0274f84f1ebbbffbd73ef11cd89a8e019b927854:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-labltk
 * [new ref]         0274f84f1ebbbffbd73ef11cd89a8e019b927854 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0274f84 OCaml 5.1.1 + s390x code gen fix for Fedora 40