removing large files from git history

If large files have been committed by mistake, they add to extra file-transfers for every new git clone. So, followed this - 

https://www.baeldung.com/git-remove-file-commit-history#using-git-filter-repo

After that, needed

git remote add origin git@github.com:usrname/reponame.git

and

git push -f origin hn # push -f to force push

 

https://stackoverflow.com/questions/24357108/updates-were-rejected-because-the-remote-contains-work-that-you-do-not-have-loca