BI Publisher with GIT Repo

I'm looking to the solution how introduce version control process (most wanted GIT flow) to DataModels(SQL) and optionally report templates development process in BI Publisher.

Any one deal with such challenge ?

Note: Of course I can pump all SQLs to repo and have GIT flow separately (only master branch queries will got to PROD). But this approach will require lot of copy/past, entails high costs (mainly time), ineffective, very easy to break standard and hard to work with.