$ git clone -n https://src.fedoraproject.org/rpms/ocaml-zip.git /var/lib/mock/f42-build-865474-173169/root/chroot_tmpdir/scmroot/ocaml-zip
Cloning into '/var/lib/mock/f42-build-865474-173169/root/chroot_tmpdir/scmroot/ocaml-zip'...
$ git fetch origin 1535981e9aacf965c3e5a641c40be76ceb98cd0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-zip
 * [new ref]         1535981e9aacf965c3e5a641c40be76ceb98cd0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1535981 OCaml 5.3.0 rebuild for Fedora 42