After git commit, commit operation undo

Revoke, modify commit

• The process of writing code, if you have git add [files] git -m commit [files], do not push the code to a remote repository, to withdraw commit, according to the actual situation, with the following parameters.

Parameter Description

--mixed This is the default parameter
meaning is: do not remove the code workspace changes, revocation of commit, and undo git add .operations.
That git reset --mixed HEAD^and the git reset HEAD^effect is the same.

--soft retained performed when the code changes git commit command, only the revocation git commit -m [files] commit the content.
Means: you can continue to modify the code that is native only withdraw commit, git does not withdraw the last of the add operation.

--hard delete a workspace changes to the code commit revoked, and the revocation git add.
Note: After completion of this operation, it is restored to the last commit state.

If only commit the comment was wrong, just want to change it notes, only need to: git commit --amendmodify commit the content.