Inspired from: https://github.com/vigente/gerardus/wiki/Integrate-git-diffs-with-word-docx-files
Usage:
cd /path/to/your/repo/with/docx
sh -c "$(curl -fsSL https://gist.githubusercontent.com/ttimasdf/7965baab972b901c1f8349ce5fcb5e09/raw/setup-git-hook.sh)"
Done!