roll back last commit in git
git reset --soft HEAD~1revert last commit git
$ git commit -m "Something terribly misguided" # (0: Your Accident)
$ git reset HEAD~ # (1)
[ edit files as necessary ] # (2)
$ git add . # (3)
$ git commit -c ORIG_HEAD # (4)get back some commits git
git revert {commit_id}'bootstrap cdn
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