1. Install Pandoc.
2. git pull this repository.
3. Open .gitconfig and append these texts to your ~/.gitconfig file, if this is your first time using this repository in the machine. If .gitconfig file doesn't exist, create it.
4. [Optional] Delete .gitconfig file.
5. Add a .docx file, edit and commit.
6. Use git wdiff CHANGEME.docx to see the difference between this commit and last commit or use git log -p --word-diff=color CHANGEME.docx to see the differences between every changes.

https://blog.front-matter.io/posts/using-microsoft-word-with-git/