how to delete last commit code example

Example 1: git undo last commit

$ git reset --soft HEAD~1

Example 2: undo last commit

git reset --hard HEAD~1

Example 3: how to delete old commits in github

git reset --hard HEAD^
git push origin -f

Example 4: undo last commit

$ git reset --hard HEAD~1

Example 5: how to undo commit

git reset <commitId>
# Exemple
git reset 5310517