$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-derivers.git /var/lib/mock/f39-build-2472978-61500/root/chroot_tmpdir/scmroot/ocaml-ppx-derivers
Cloning into '/var/lib/mock/f39-build-2472978-61500/root/chroot_tmpdir/scmroot/ocaml-ppx-derivers'...
$ git fetch origin 9ea9ab46aa06b52f4f99d2c5ad389e7fcd3896e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-derivers
 * [new ref]         9ea9ab46aa06b52f4f99d2c5ad389e7fcd3896e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ea9ab4 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild