$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ssl.git /var/lib/mock/f45-build-20720-573/root/chroot_tmpdir/scmroot/ocaml-ssl
Cloning into '/var/lib/mock/f45-build-20720-573/root/chroot_tmpdir/scmroot/ocaml-ssl'...
$ git fetch origin 5085fc06e7f7d739263df6952e47006c3910c662:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ssl
 * [new ref]         5085fc06e7f7d739263df6952e47006c3910c662 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5085fc0 OCaml 5.5.1 rebuild