The finer parts of git and other day-to-day tools seem to almost always be picked up on the job. I've seen this confusion of git/github before, but the one I always notice is when I'm interviewing someone and they say they have node on their resume but don't know that node isn't just a webserver, they really only used it as an express server and many didn't even know that it could touch the filesystem.

It's usually not a problem since they tend to already know javascript and can get things working by referencing the node api docs, but it's still really funny to me every time it happens. There's lots of stuff people don't know until they know.