Diff review

Read the diff, understand what it changes, and report only problems you can point to. A short list of real findings beats a long list of opinions.

Step 1: get the right diff

Find the base branch. Use the one the user names. Otherwise try main, then master, then develop.

git fetch origin --quiet                      # skip if offline
BASE=$(git merge-base HEAD origin/main)       # or the named base
git diff --stat "$BASE"...HEAD                 # what changed, how much
git diff "$BASE"...HEAD                        # committed changes on this branch
git diff HEAD                                  # plus uncommitted work, if asked
git log --oneline "$BASE"..HEAD                # the intent, from commit messages

For staged changes only, use git diff --cached. For a single commit, use git show <sha>.