$ git clone -n https://src.fedoraproject.org/rpms/ocaml-cudf.git /var/lib/mock/f42-build-865899-173583/root/chroot_tmpdir/scmroot/ocaml-cudf
Cloning into '/var/lib/mock/f42-build-865899-173583/root/chroot_tmpdir/scmroot/ocaml-cudf'...
$ git fetch origin cfa843d9701e34b13cc004c0764250428e3cdf89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-cudf
 * [new ref]         cfa843d9701e34b13cc004c0764250428e3cdf89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfa843d OCaml 5.3.0 rebuild for Fedora 42