Repro:

1. Go to https://sourcegraph.sgdev.org/github.com/sourcegraph/javascript-typescript-buildserver/-/blob/.gitignore
2. Browse around to a few files

Eventually, I see this error in the JS console:

screenshot from 2018年11月30日 00-38-55

It doesn't seem to be breaking anything, but it definitely looks like a bug (given that the first s of the repo name is chopped off.