how to reset the commit in git code example

Example 1: undo commit

# KEEP CHANGES
git reset --soft HEAD~1

# REMOVE CHANGES
git reset --hard HEAD~1

Example 2: git undo commit

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

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

Example 3: git undo last commit

$ git reset --soft HEAD~1

Example 4: git reset to commit

# reset to specefic commit
git reset --hard <commit id>

# to go back one step 
git reset --hard HEAD~1

# note: use --soft to keep file changes

Example 5: undo most recent commit

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

Example 6: undo reset commit git

git reflog //to get commitID
git reset #commitID