In May 2025, Andrew Mulhern focused on improving the reliability and user experience of the Packit CLI by addressing a critical bug in the packit/packit repository. He identified and corrected a typo in an error message, changing 'fill' to 'file' to ensure users received accurate instructions for reporting unexpected exceptions. This targeted Python bug fix enhanced user guidance, reduced confusion, and helped streamline support by minimizing misreports. Andrew demonstrated strong CLI development skills and attention to detail, maintaining repository quality through a precise, low-risk patch. His work emphasized clear communication and efficient collaboration within the existing codebase and team.