GitHub has introduced a private beta feature for GitHub Copilot, which allows developers to see when code suggestions match public code on GitHub, offering insights into where similar code appears and under what licenses. This update aims to enhance decision-making by providing context for code suggestions, particularly in scenarios with minimal surrounding code. The feature includes a filter that checks code suggestions against an index of public code, displaying matches and repository information directly in the editor. While matches occur in less than one percent of Copilot suggestions, they are more common in nearly empty files due to the lack of context. The tool also addresses the complexities of code attribution, given that matching code can appear in numerous repositories under different licenses. By offering visibility into code origins, developers can attribute code properly, learn from others, and potentially take dependencies on open-source libraries, fostering a more informed and collaborative development environment.