I have a local repo and a remote repo on github. For business reasons, they aren\'t in sync. I\'ve done a lot of work on the local that I\'m keeping, and now I\'m manually add
Try looking at git help rev-list. The option you are probably looking for is --right-only, so maybe this gets you what you want:
git help rev-list
--right-only
git diff --color --right-only master..origin/master