I agree that testing for knowledge of specific tools is probably not what you want, but I find that among people who do have significant experience with git, ab

I agree that testing for knowledge of specific tools is probably not what you want, but I find that among people who do have significant experience with git, ability to use it effectively seems to correlate pretty strongly with overall programming ability and productivity. I mainly have experience with git, but I assume this generalizes to other version control systems. I also think that version control is a pretty fundamental skill for software engineers (comparable to unit testing), so I think substituting that for "use a version control system to do x" would fit in with with other skills.