undo 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: undo last commit

git reset --soft HEAD~1

Example 4: revert last commit

git reset HEAD~