revert changes in commit code example

Example 1: git undo commit

# Uncommit the changes
git reset --soft HEAD~1

# Completely delete the changes
git reset --hard HEAD~1

Example 2: how to revert a commit

git reset --soft HEAD@{1} # delete the last commit keeping the changes
git reset --hard HEAD@{1} # delete the last commit removing the changes

git push --force origin master # delete the last commit also on remote branch

Example 3: undo most recent commit

$ git commit -m "some comment"                
$ git reset HEAD~                                          
<< edit files as necessary >>                              
$ git add ...                                              
$ git commit -c ORIG_HEAD

Example 4: git revert commit

git revert <commit hash>