Show branches that do not contain commit

Question

git branch -a --contains <hash> gives me all those branches containing hash. what I want is git branch -a --no-contains <hash>. Unfortunately, there doesn't seem to be a command to accomplish this, so I'm thinking the solution is something like:

git branch -a | grep -v output of(git branch -a --contains) but my bash isn't up to the task.

Show all branches that commit A is on and commit B is not on? would seem to apply, but the approach seems more complicated than necessary.

What is the best/most simple approach to accomplish the above?

Answer 1

The --no-contains flag was added in Git 2.13.