我有这个：
branch: commit 1, commit 2, 3,4 master: commit 1, commit 2, 3,4,5,6,7
你怎么能在分支之后commit 2（在那个历史点上）和主分支之间进行区分commit 3？
commit 2
commit 3
git diff branch git-diff git-commit
branch ×1
diff ×1
git ×1
git-commit ×1
git-diff ×1