$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ounit.git /var/lib/mock/f40-build-783990-133236/root/chroot_tmpdir/scmroot/ocaml-ounit
Cloning into '/var/lib/mock/f40-build-783990-133236/root/chroot_tmpdir/scmroot/ocaml-ounit'...
$ git fetch origin 752b9fcaa27e956dfe23fd1cce317fe00c08b49e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ounit
 * [new ref]         752b9fcaa27e956dfe23fd1cce317fe00c08b49e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 752b9fc Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild