$ git clone -n https://src.fedoraproject.org/rpms/ocaml-yaml.git /var/lib/mock/f40-build-784318-133348/root/chroot_tmpdir/scmroot/ocaml-yaml
Cloning into '/var/lib/mock/f40-build-784318-133348/root/chroot_tmpdir/scmroot/ocaml-yaml'...
$ git fetch origin 8c442728aa747d08b3b95705c33b3fabc4a5ccda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-yaml
 * [new ref]         8c442728aa747d08b3b95705c33b3fabc4a5ccda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c44272 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild