$ git clone -n https://src.fedoraproject.org/rpms/ocaml-merlin.git /var/lib/mock/f45-build-20642-572/root/chroot_tmpdir/scmroot/ocaml-merlin
Cloning into '/var/lib/mock/f45-build-20642-572/root/chroot_tmpdir/scmroot/ocaml-merlin'...
$ git fetch origin 59e28466ddf2851b7cee055aad896add172a0678:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-merlin
 * [new ref]         59e28466ddf2851b7cee055aad896add172a0678 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59e2846 OCaml 5.5.1 rebuild