> It's not clear that contributions submitted to an MIT project grant permission to incorporate those contributions under the same terms. We understand it socia

> It's not clear that contributions submitted to an MIT project grant permission to incorporate those contributions under the same terms. We understand it socially, but it's not legally explicit. Given that GitHub works only through forks and pull requests, this is not a problem. There are two repos A and B published under the MIT License. There is no need to address what happens when the contributor behind B sends you a pull request. (There is no need for contributor who published B to even send you a pull request; in theory, you could "reach over" and start incorporating anything from B into A without any participation from the person behind B—just like you [probably] did with all your vendored libraries.) Worrying about this is one of the cargo cultiest memes, second only to all the videos on YouTube who think they're protected by a notice that says, "I don't claim ownership of this video; all rights belong to X".