$ git clone -n https://src.fedoraproject.org/rpms/ocaml-labltk.git /var/lib/mock/f45-build-20617-572/root/chroot_tmpdir/scmroot/ocaml-labltk
Cloning into '/var/lib/mock/f45-build-20617-572/root/chroot_tmpdir/scmroot/ocaml-labltk'...
$ git fetch origin 3b37b836823de88c2a8d2ed658bf3ef0b9ca9ef1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-labltk
 * [new ref]         3b37b836823de88c2a8d2ed658bf3ef0b9ca9ef1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b37b83 OCaml 5.5.1 rebuild