I don't think that the GPL gives much more protection than any other FOSS license, here, in practice.
If Copilot were to reproduce a larger part of, say, an MIT-licensed codebase or almost any other permissive licence, then they should legally provide attribution. I'm pretty sure that they don't even have an option to provide such specific attribution, which means that either they believe that the code copied from any one source is below the relevant threshold or they're just ignoring copyright.
If Copilot were to reproduce a larger part of, say, an MIT-licensed codebase or almost any other permissive licence, then they should legally provide attribution. I'm pretty sure that they don't even have an option to provide such specific attribution, which means that either they believe that the code copied from any one source is below the relevant threshold or they're just ignoring copyright.