$ git clone -n https://src.fedoraproject.org/rpms/ocaml-pyml.git /var/lib/mock/f45-build-20702-573/root/chroot_tmpdir/scmroot/ocaml-pyml
Cloning into '/var/lib/mock/f45-build-20702-573/root/chroot_tmpdir/scmroot/ocaml-pyml'...
$ git fetch origin edb9a05012b3bb07f62b8cc7f75983d7f22c6719:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-pyml
 * [new ref]         edb9a05012b3bb07f62b8cc7f75983d7f22c6719 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at edb9a05 OCaml 5.5.1 rebuild