How to migrate a repository from bitbucket to github?

Question

git

How to migrate a repository from bitbucket to github?
How to keep up-to-date repositories on both sites?

Answer 1

git clone --mirror [email protected]:username/projectname.git
cd projectname
git remote add github [email protected]:username/projectname.git
git push --mirror github

Where username and projectname are the username and projectname, respectively. And of course the [email protected]:username/projectname.git repository must exist before the push.