$ git clone -n https://src.fedoraproject.org/rpms/ocaml-uunf.git /var/lib/mock/f39-build-1886639-42783/root/chroot_tmpdir/scmroot/ocaml-uunf
Cloning into '/var/lib/mock/f39-build-1886639-42783/root/chroot_tmpdir/scmroot/ocaml-uunf'...
$ git fetch origin d87e834273ff9e1296ad0aa1d130807bee1e74e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-uunf
 * [new ref]         d87e834273ff9e1296ad0aa1d130807bee1e74e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d87e834 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild