git-missing man page
git-missing — Show commits missing from another branch
git-missing [<first branch>] <second branch> [<git log options>]
Shows commits that are in either of two branches but not both. Useful for seeing what would come across in a merge or push.
First branch to compare. If not specified, defaults to currently checked out branch.
Second branch to compare.
[<git log options>]
Any flags that should be passed to ´git log´, such as --no-merges.
Show commits on either my current branch or master but not both:
$ git missing master < d14b8f0 only on current checked out branch > 97ef387 only on master
Show commits on either branch foo or branch bar but not both:
$ git missing foo bar < b8f0d14 only on foo > f38797e only on bar
Written by Nate Jones <firstname.lastname@example.org>