During September 2025, Longhao contributed to the archlinuxcn/repo project by enhancing the Gatus PKGBUILD to improve build determinism and packaging reliability. He implemented a feature that enabled the -modcacherw flag for Go module downloads, ensuring that module cache entries remain writable across different environments and continuous integration systems. This technical approach addressed issues with reproducible builds by reducing environment-specific drift and aligning with reproducible-build standards. Longhao’s work focused on build systems and package management, utilizing Shell scripting to modify the build process. The contribution demonstrated a targeted solution to reproducibility challenges within the context of Arch Linux package maintenance.