This is correct; we’ve been trying to find a reasonable way to work with Git for design (not CSS…
Nando Rossi
11

There are actually solutions for design file versioning already: I have come across a few of them in the past months… The first ones that come to mind now are the SketchGit plugin (which only works with non App Store version of Sketch) and Pixelapse (for all Adobe and Sketch).