$ git clone -n https://src.fedoraproject.org/rpms/ocaml-labltk.git /var/lib/mock/f42-build-865456-173151/root/chroot_tmpdir/scmroot/ocaml-labltk
Cloning into '/var/lib/mock/f42-build-865456-173151/root/chroot_tmpdir/scmroot/ocaml-labltk'...
$ git fetch origin 7ce4a81ca6776f2346ef8179936b6b816f099384:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-labltk
 * [new ref]         7ce4a81ca6776f2346ef8179936b6b816f099384 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ce4a81 OCaml 5.3.0 rebuild for Fedora 42