People like storing everything in git because it significantly simplifies configuration management. A build can be cleanly linked to a git hash instead of being

People like storing everything in git because it significantly simplifies configuration management. A build can be cleanly linked to a git hash instead of being a hash and a bunch of artifacts versions especially if you vendor your dependencies in your source control and completely stop using an artifact repository. With a good build system using a shared cache, it makes for a very pleasant development environment.