$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-optcomp.git /var/lib/mock/f39-build-1963391-43278/root/chroot_tmpdir/scmroot/ocaml-ppx-optcomp
Cloning into '/var/lib/mock/f39-build-1963391-43278/root/chroot_tmpdir/scmroot/ocaml-ppx-optcomp'...
$ git fetch origin d13aded78f828cadb469f56ae60477f5fee5c254:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-optcomp
 * [new ref]         d13aded78f828cadb469f56ae60477f5fee5c254 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d13aded Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild