New top story on Hacker News: Ask HN: Which are the best go repositories to read to learn the language?

Ask HN: Which are the best go repositories to read to learn the language?
13 by Kreotiko | 3 comments on Hacker News.
I am looking for examples of open source projects showcasing best in class use of Golang. It doesn’t need to be the famous products we all know about. I am looking at examples of real world professional usage for somebody already familiar with the language constructs and syntax.