“First, our previous research suggests that matches occur in less than one percent of GitHub Copilot suggestions. But that one percent isn’t evenly distributed across all use cases.”
Copilot now shows the repositories and licenses when a suggestion matches public code. The matches cluster in empty files, exactly where someone asks for a whole function from scratch. GitHub also points out that Stack Overflow snippets go unattributed too, as if that settles the license question. The feature is a private beta, and the training on billions of lines of public code was not.