Undo stage hunk in magit

Question

If I accidentally staged a hunk that I wanted a better look at, how do I undo that action (the most recent action). C-/ does not work.

Sure I can U to unstage all, but say all else staged is valid.

Answer 1

Solution 1,

M-x magit-unstage

Solution 2:

Any commit/patch/diff could be opened in diff-mode. Then M-x diff-apply-hunk to apply hunk. C-u M-x diff-apply-hunk to undo hunk.

Actually, you don't need switch to diff-mode from magit-revision-mode at all, simple diff-apply-hunk is enough.

Extra tip:

If you use smex or counsel-M-x from counsel, when you type M-x some-keyword, all related commands are displayed.

As you can see, there are other commands to upstage/undo a hunk.