During January 2025, Xiang worked on the xtyxtyx/go-git repository, implementing partial data transfer for fetch and clone operations using the --filter option. This feature enables servers to transmit only a subset of repository objects, reducing bandwidth usage and improving performance for large repositories. Xiang’s approach involved adding new fields and comprehensive error handling to support robust and safe partial transfers, demonstrating proficiency in backend development, Git protocol implementation, and Go. The work addressed the challenge of optimizing data transfer efficiency and established a solid foundation for future enhancements in transfer optimization, reflecting thoughtful engineering and attention to protocol details.