Yeah, we're still facing issues with, erm, Github issues.
Also, while they haven't updated this blog post for a while, their status page has been very up-to-date and informative: https://status.github.com/messages
Consider this a lesson on serverlessness. (We have been similarly afflicted, but their git backend seems to be up; and even further, we have rediscovered what we stopped paying attention to: that with Git, a centralized repo is just a convenience, not a requirement.)
Also, while they haven't updated this blog post for a while, their status page has been very up-to-date and informative: https://status.github.com/messages