$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-expect.git /var/lib/mock/f42-build-872991-178322/root/chroot_tmpdir/scmroot/ocaml-ppx-expect
Cloning into '/var/lib/mock/f42-build-872991-178322/root/chroot_tmpdir/scmroot/ocaml-ppx-expect'...
$ git fetch origin 3c9b2da4ce47691b75fc782f91d6145efe1231c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-expect
 * [new ref]         3c9b2da4ce47691b75fc782f91d6145efe1231c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c9b2da Rebuild for ocaml-ppxlib 0.35.0