A colleague committed (C1) a bunch of new code to github, and I made some line comments through the github ui and asked her to respond to those before I completed the review. She did, submitting a new commit (C2). When I go to review her new code, I am shown the differences between C1 and C2, which is not what I want. For example, I’m very interested in code that appears in both C1 and C2. Also, I’m not interested in the changes she made from C1 to C2 that are not directly related to my comments; they’re just a visual distraction. Is there a way to view commit C2 and make line comments on it without viewing it as a diff from C1?
EDIT: See the clarifying comment in response to @NullToken’s answer.
I contacted GitHub support and was given this partial URL to generate diffs between two arbitrary commits:
They confirmed that they do not support line notes in this view but said they would add it to the feature request list.