$ git clone -n https://src.fedoraproject.org/rpms/ocaml-yaml.git /var/lib/mock/f41-build-811985-147631/root/chroot_tmpdir/scmroot/ocaml-yaml
Cloning into '/var/lib/mock/f41-build-811985-147631/root/chroot_tmpdir/scmroot/ocaml-yaml'...
$ git fetch origin 86622bcb5a4a8a19c3af2dedee71f8c666d014af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-yaml
 * [new ref]         86622bcb5a4a8a19c3af2dedee71f8c666d014af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86622bc OCaml 5.2.0 for Fedora 41