Worked on the google/copybara repository to address a compatibility issue in Go module version resolution. Implemented a fallback mechanism that automatically adds a 'v' prefix when resolving module versions via the Go Proxy .info endpoint, enabling support for pseudo-versions and references lacking the prefix. This backend solution, tracked with proper change management, improved dependency resolution reliability in CI environments and stabilized downstream builds by reducing failures related to Go Proxy protocol inconsistencies. Demonstrated backend development skills and understanding of Go modules, while leveraging Java expertise to ensure robust integration and maintainability within the existing codebase over the course of the month.