how to go back to an old commit in git code example

Example 1: git roll back to specific commit

//Git Rollback to a specific commit via Mac terminal

//Navigate to project and open git log
cd projectname
git log --oneline

//Locate and checkout the desired commit ID
git checkout abc1234 . 

//(Type q to quit the git log)

//Stage All changes, commit with comment, and push to remote
git add -A
git commit -m "Revert commit: abc1234"
git push

Example 2: git go back to previous commit

git checkout 12feg3435 #commit ID

Example 3: how to revert to log in git

git revert --no-commit 0766c053..HEAD
git commit

Example 4: git revert to old commit

git reset --hard c14809fa