How to undo the last Git commit?

如何調整已經commit的.... commit

Reference: How to undo the last Git commit?

$ git commit "待調整的commit"   (1)commit後
$ git reset --soft 'HEAD^'       (2)回剛才的commit 

$ edit                           (3)重新調整

$ git add ....                 (4)
$ git commit -c ORIG_HEAD      (5)跳視窗修改commit message"待調整的commit"

p.s. 上次回復(revert)到太早期的版本，造成一堆commit都不見
幸好git還是有保留下來，不然就挫咧等...