SHELL

cancel a commit not pushed

git reset --soft HEAD~

git delete last commit after push

git reset --hard HEAD~1
git push -f <remote> <branch>

git delete pushed commit

git reset --hard <last_working_commit_id>

git push --force

delete a pushed commit

# delete the last commit
$git reset –hard HEAD~

remove commit not pushed

git reset --hard origin/main

git remove last pushed commit

git reset --hard 'xxxxx'

git clean -f -d

git push -f

git delete pushed commit

git reset --hard your local branch to remove changes from working tree and index, 
git push --force (or git push --force-with-lease) your revised local branch to the remote

check the full answer from here 
https://stackoverflow.com/questions/3293531/how-to-permanently-remove-few-commits-from-remote-branch

delete last pushed commit

$ git reset <previous label or sha1>
$ git commit -am "blabla"                    <--- optional
$ git push -f <remote-name> <branch-name>    

github undo last pushed commit

git reset <previous label or sha1>
git commit -am "blabla"
git push -f <remote-name> <branch-name>

delete a pushed commit

$git log --pretty=oneline --abbrev-commit