git upstream-diff [--wordwise] [<extra args for git-diff>*]


Shows a diff between your current branch and it’s upstream. This is roughly the same as:

git diff --patience -C -C HEAD@{upstream}  <1> <2>
  1. -C -C detects file copies/renames

  2. --patience uses the patience-diff algorithm, which tends to produce nicer diffs in many cases.

The difference is that HEAD@{upstream} is actually the tagged merge base of your branch (See git-rebase-update(1)). This means that if your upstream branch was rebased, but you haven’t yet rebased the current branch on top of it, you’ll still see an accurate diff compared to just diffing against @{upstream}.

The --wordwise option also allows git-diff to do word-by-word comparison in a semi-intelligent way. However, sometimes it can produce surprising results, so it is disabled by default.



Print a colorized word-wise diff instead of a line-wise diff.

<extra args for git-diff>

Extra arguments are included in the invocation of git-diff(1). These can be anything that git-diff normally takes.


This is particularly useful to show which files have been changed in comparison to the upstream branch.


Diff against the staged (cached) changes, instead of against the working directory. This is substantially faster on large repos, but doesn’t take into account unstaged changes (i.e. changes in your working copy which you haven’t staged with git add).

-- <filename patterns>*

Restrict the diff to only show the diff for given files compared to the upstream.



A list-configuration variable. Each instance of this config variable will be prepended to all invocations of git upstream-diff, as if you had passed them on the command line.


Some common short-hand aliases. Feel free to add these to your ~/.gitconfig file.

  git udiff = upstream-diff



Part of the chromium depot_tools(7) suite. These tools are meant to assist with the development of chromium and related projects. Download the tools from here.