Mike Limansky upgraded the build environment for the sbt/sbt-git repository, focusing on preparing the project for Scala 3 migration. He aligned the Scala 3 version with the latest sbt 2.0.0-M3 release, ensuring compatibility and smoother integration of new features. Using Scala and sbt, Mike addressed compiler warnings by updating method calls and refining string matching syntax, which improved code quality and reduced migration risks. His work enhanced build stability and continuous integration reliability, laying a solid foundation for future development. The depth of his contributions reflects a strong understanding of build configuration and Scala development best practices.