$ git clone -n https://src.fedoraproject.org/rpms/ocaml-opam-file-format.git /var/lib/mock/f39-build-1963349-43278/root/chroot_tmpdir/scmroot/ocaml-opam-file-format
Cloning into '/var/lib/mock/f39-build-1963349-43278/root/chroot_tmpdir/scmroot/ocaml-opam-file-format'...
$ git fetch origin c7e885f34ac0440c3e6314eb7d501db7a132465c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-opam-file-format
 * [new ref]         c7e885f34ac0440c3e6314eb7d501db7a132465c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7e885f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild