I need to get the diff output between two commits for a specific file.
For the moment, I'm doing this command :
git diff parent-sha child-sha path/to/file
There is my problem : For some commits, there are multiple parent commits and I would like to know how to have only one output instead of having multiple parent commits.
For instance, as you can see at the picture below, the commit 44d637 has multiple parent commits (fa82b1 and 3a76be). I'm searching to have an unique command to have the diff between this commit and his parents.