$ git clone -n https://src.fedoraproject.org/rpms/ocaml-odoc.git /var/lib/mock/f42-build-3406859-45143/root/chroot_tmpdir/scmroot/ocaml-odoc
Cloning into '/var/lib/mock/f42-build-3406859-45143/root/chroot_tmpdir/scmroot/ocaml-odoc'...
$ git fetch origin 7bf77f58f43c0ba8a18e3da9592a1e5453712556:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-odoc
 * [new ref]         7bf77f58f43c0ba8a18e3da9592a1e5453712556 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bf77f5 Rebuild for ocaml-fmt 0.10.0