$ git clone -n https://src.fedoraproject.org/rpms/ocaml-base.git /var/lib/mock/f40-build-784179-133259/root/chroot_tmpdir/scmroot/ocaml-base
Cloning into '/var/lib/mock/f40-build-784179-133259/root/chroot_tmpdir/scmroot/ocaml-base'...
$ git fetch origin 3c82b823a88ba8fd14af0893db119b2a12bcb7f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-base
 * [new ref]         3c82b823a88ba8fd14af0893db119b2a12bcb7f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c82b82 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild