$ git clone -n https://src.fedoraproject.org/rpms/ocaml-perl4caml.git /var/lib/mock/f45-build-20641-572/root/chroot_tmpdir/scmroot/ocaml-perl4caml
Cloning into '/var/lib/mock/f45-build-20641-572/root/chroot_tmpdir/scmroot/ocaml-perl4caml'...
$ git fetch origin 927e1b1922f5d4913c1698c1924aaea64b199fff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-perl4caml
 * [new ref]         927e1b1922f5d4913c1698c1924aaea64b199fff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 927e1b1 OCaml 5.5.1 rebuild