$ git clone -n https://src.fedoraproject.org/rpms/ocaml-mlmpfr.git /var/lib/mock/f39-build-2474279-61551/root/chroot_tmpdir/scmroot/ocaml-mlmpfr
Cloning into '/var/lib/mock/f39-build-2474279-61551/root/chroot_tmpdir/scmroot/ocaml-mlmpfr'...
$ git fetch origin e666a2f631b0cf4a7e4cc0914886d52a7156110f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-mlmpfr
 * [new ref]         e666a2f631b0cf4a7e4cc0914886d52a7156110f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e666a2f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild