Duplicating a github repository

Follow below steps to duplicate your repository

•   Create your new  repository called "my_new_repository"

• Create a clone of your repository  

                     git clone https://github.com/user_name/my_old_repository.git

• cd my_old_repository

• Push mirror to new repository 

                   git push --mirror https://github.com/user_name/my_new_repository.git

·                           cd ..

•  Remove old git

                rm -rf my_old_repository.git 

 

And here you go.

 

For more information visit below website

https://help.github.com/en/github/creating-cloning-and-archiving-repositories/duplicating-a-repository