git merge and cherry-pick and duplicated commits?

I created a branch from master, did a commit (8e9fdd), then did 2 more commits (11c59c and 7024d), then did another commit (2daf23). From master, I did a commit (47bd1b) then cherry-pick'd 2 commits from the branch (11c59c and 7024d). When merged the branch into master, I see the 2 cherry-picked commits twice in the log (once from the original cherry-pick's and again from the merge).

I thought git would realize that master already had those 2 commits and not add them again when merging?