There are multiple reasons why binary repository managers like Artifactory exist.

And, arguably, the primary reason that perforce is still popular in some domains is that it works well with both large and opaque objects.

Once you've decided to version your src directory, whether a priori or because once bitten, twice shy, the next question is:

Is git the correct version control for this? Or are all the changes so large that git's advantages in merging and manually diffing things become irrelevant?