git reset head of master

git fetch origin
git reset --hard origin/master
Remember this forever

git fetch origin
git reset --hard origin/master

git reset --hard f414f31
git reset --soft HEAD@{1}
git commit -m "Reverting to the state of the project at f414f31"

 git reset --hard <commit-hash>
 git push -f origin master # only works for unprotected branches that allow force push

$ git remote set-url origin https://github.com/USERNAME/REPOSITORY.git

git reset --hard origin/master; git commit -m 'reset to remote';git push --force local dev