$ git clone -n https://src.fedoraproject.org/rpms/ocaml-uucd.git /var/lib/mock/f42-build-865660-173376/root/chroot_tmpdir/scmroot/ocaml-uucd
Cloning into '/var/lib/mock/f42-build-865660-173376/root/chroot_tmpdir/scmroot/ocaml-uucd'...
$ git fetch origin 434a0f6774dc6db52af64928fd38204dcf69c993:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-uucd
 * [new ref]         434a0f6774dc6db52af64928fd38204dcf69c993 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 434a0f6 OCaml 5.3.0 rebuild for Fedora 42