Example
git diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] [<common-diff-options>] <tree-ish> [<tree-ish>] [<path>...]
| Option | Explanation |
|---|---|
| -r | diff recursively |
| --root | include the initial commit as diff against /dev/null |
