Something really wrong if you can't work just because Github is inaccessible.
"Hey boss, I can't work because it's building!" "OK, It's done building.. but I can't work because Github is down"! "Ok Github is back up... but I can't work because StackOverflow is down!" "Ok StackOverflow is back up.. but it's 5 PM and I only get paid to work 9 to 5!"