Is there a way to check if two different git commits are equal in content?

Question

I know that git tracks content and generates a sha based partially on the content. However, the sha is also based upon the parent commit. When I rebase a branch, because my commits now have a different ancestor, all of my commits have different shas.

But what I'm wondering, is there a way to compare two commits (or commit ranges) to see if content-wise, they are the same? This should also be able to tell if a binary change is the same as well.

I'm thinking if there was some way to get the sha for the content without the ancestor information incorporated, that might do it.

Thanks for any and all help,

Answer 1

You want the --cherry-mark option to git log which marks commits with an equals sign when their patch content is the same.

git log --decorate --graph --oneline --cherry-mark --boundary A...B

is a great way to compare the rebased branch B with the original branch A. I use this for checking that my commits made using git-tfs are still ok once TFS has been at them.

Answer 2

https://stackoverflow.com/a/23527631/2630028

diff <(git show 123456) <(git show abcdef)