Well, Git itself is not a good tool for handling large dataset files. In most cases, you're not interested in deltas between commits. The size of your repo can also grow or of control pretty quickly. As a dirty workaround, you have Git-LFS to do that for you. People tend to use it in repos with a lot of multimedia assets. This works well in many cases, but it has its own pitfalls as well.

@freeone3000 GitHub is amazing for building and collaborating on source code, we're building services to enable safe and private collaboration on streaming data (whether text, images, video, your own format)