$ git clone -n https://src.fedoraproject.org/rpms/ocaml-yojson.git /var/lib/mock/f40-build-2300114-56696/root/chroot_tmpdir/scmroot/ocaml-yojson
Cloning into '/var/lib/mock/f40-build-2300114-56696/root/chroot_tmpdir/scmroot/ocaml-yojson'...
$ git fetch origin 0e8864ea302f0ffc8575deb1c209e1f650fae7ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-yojson
 * [new ref]         0e8864ea302f0ffc8575deb1c209e1f650fae7ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e8864e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild