git clone --depth 1 --branch v25.9.23 https://github.com/google/flatbuffers.git /tmp/flatbuffers-official  for dir in include src CMakeLists.txt; do    echo "=== Comparing $dir ==="    diff -r "third_party/flatbuffers/$dir" "/tmp/flatbuffers-official/$dir" \      --exclude='*.o' --exclude='*.so' --exclude='CMakeFiles' \      --exclude='*.cmake' --exclude='Makefile' 2>/dev/null || echo "No differences"  done