move master branch from one repo as the master branch to another repo, without merging

• old repo is on Github, new repo is on Bitbucket

• old site was built with Jekyll, new site is built with Hugo

• create a new branch, checkout from within master

1git checkout -b jekyll
2git push -u origin jekyll

delete everything inside the master of old repo

1git checkout master
2rm -rf ./*

1git remote add bitbucket git@bitbucket.org:aamnah/tldrdevnotes.com.git
2git remote update

1git merge --allow-unrelated-histories bitbucket/master