$ git clone -n https://src.fedoraproject.org/rpms/ocaml-yaml.git /var/lib/mock/f39-build-1827464-41872/root/chroot_tmpdir/scmroot/ocaml-yaml
Cloning into '/var/lib/mock/f39-build-1827464-41872/root/chroot_tmpdir/scmroot/ocaml-yaml'...
$ git fetch origin 330fbeb318d20e1427ad36ab6c604095770d10a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-yaml
 * [new ref]         330fbeb318d20e1427ad36ab6c604095770d10a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 330fbeb Version 3.2.0