How to use [git.diff]

The reference page of git.diff has its arguments, constraints and declaration.

Shows the unified diff between the working tree and HEAD. The repo path is the node value. By default the whole repository is diffed, while providing a repo-relative file restricts the diff to that one file. Untracked files have no diff, since git knows nothing about them yet.

git.diff:/modules/stripe/

git.diff:/modules/stripe/
   file:README.md