$ git clone -n https://src.fedoraproject.org/rpms/ocaml-uutf.git /var/lib/mock/f43-build-side-114891-61012788-6587686/root/chroot_tmpdir/scmroot/ocaml-uutf
Cloning into '/var/lib/mock/f43-build-side-114891-61012788-6587686/root/chroot_tmpdir/scmroot/ocaml-uutf'...
$ git fetch origin 23ced5e3e38265d9e620215a3785a7d033acfb1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-uutf
 * [new ref]         23ced5e3e38265d9e620215a3785a7d033acfb1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23ced5e Rebuild to fix OCaml dependencies