MIT's 6.824 Distributed Systems course is taught in Go.
https://pdos.csail.mit.edu/6.824/index.html
https://www.youtube.com/playlist?list=PLpl804R-ZwjKCOwWpTZ21...
https://pdos.csail.mit.edu/6.824/index.html
https://www.youtube.com/playlist?list=PLpl804R-ZwjKCOwWpTZ21...