$ git clone -n https://src.fedoraproject.org/rpms/ocaml-lablgtk.git /var/lib/mock/f40-build-2013403-45880/root/chroot_tmpdir/scmroot/ocaml-lablgtk
Cloning into '/var/lib/mock/f40-build-2013403-45880/root/chroot_tmpdir/scmroot/ocaml-lablgtk'...
$ git fetch origin cfaaf0a1bd64a90dd079888a1f57a504d7990234:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-lablgtk
 * [new ref]         cfaaf0a1bd64a90dd079888a1f57a504d7990234 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfaaf0a OCaml 5.1.1 rebuild for Fedora 40