Jouko Haanpää focused on improving repository hygiene in the ci-test-automation project by updating the .gitignore configuration to exclude the __pycache__ directory. This change, implemented using Git and configuration management skills, prevented compiled Python bytecode from being tracked, thereby reducing unnecessary repository noise and supporting a cleaner codebase. By delivering this targeted feature, Jouko ensured that the repository remained stable and easy to maintain, with minimal disruption to ongoing development. The work demonstrated a methodical approach to operational best practices, emphasizing the importance of version control discipline and codebase quality, though the scope was limited to a single configuration improvement.