Worked on the ecmwf/metkit repository with a focus on repository hygiene and maintenance rather than user-facing features. Addressed a metadata issue by updating the AUTHORS file, applying minor formatting corrections and removing trailing spaces to ensure consistency and prevent unnecessary diffs in future commits. Utilized Git for precise commit management, including reverting a test commit to maintain a clean and predictable history. The work involved careful attention to codebase standards and collaborative workflows, primarily using Python and shell scripting. These efforts preserved the stability of the project, ensuring that existing functionality remained unaffected while upholding contribution and formatting standards.