Does something like git for MS Word Exisits?

TortoiseGit is an easy to use client for the Git distributed revision control system.

In the spirit of free software, everyone is encouraged to help improve this project.

I looked at this for a similar problem. Pandoc is a beast. I eventually used it alongside https://asciidoctor.org which was a pretty tight tool chain for an extended markdown format to see https://docs.asciidoctor.org/asciidoctor/latest/migrate/ms-word/#pandoc.