git commit revocation has been submitted to the remote server

git commit revocation has been submitted to the remote server:

First, the need to use git log to see the withdrawal of commitid 
    git log 

Second, the revocation: 
    One way: 
             // revoked commit, but does not modify the code 
            git reset commitId 
    
    way: 
            // revoked commit, while the recovery code ID to the corresponding versions of 
            git reset --hard commitId 

perform three or need to revoke submitted to the remote server: 
　　git the Push the HEAD Origin --force

 

// undo the last commit has been submitted but not push

git reset --soft head^