git rollback

　http://stackoverflow.com/questions/1616957/how-do-you-roll-back-reset-a-git-repository-to-a-particular-commit

git reset --hard <tag/branch/commit id>

Notes:

• git reset without the --hard option resets the commit history, but not the files. With the --hard option the files in working tree are also reset. (credited user)

• If you wish to commit that state, so remote repository also points to rolled back commit do: git push <reponame> -f (credited user)