$ git clone -n https://src.fedoraproject.org/rpms/ocaml-fmt.git /var/lib/mock/f45-build-20531-571/root/chroot_tmpdir/scmroot/ocaml-fmt
Cloning into '/var/lib/mock/f45-build-20531-571/root/chroot_tmpdir/scmroot/ocaml-fmt'...
$ git fetch origin 957acd1cc70b05a0ae2eac778f04767a34dc92ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-fmt
 * [new ref]         957acd1cc70b05a0ae2eac778f04767a34dc92ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 957acd1 OCaml 5.5.1 rebuild