参考: https://help.github.com/articles/changing-a-remote-s-url/
The git remote set-url command changes an existing remote repository URL.
The git remote set-url command takes two arguments:
An existing remote name. For example, origin or upstream are two common choices.
A new URL for the remote.
List your existing remotes in order to get the name of the remote you want to change.
git remote -v
origin git@github.com:USERNAME/REPOSITORY.git (fetch)
origin git@github.com:USERNAME/REPOSITORY.git (push)
Change your remote's URL from SSH to HTTPS with the git remote set-url command.
git remote set-url origin https://github.com/USERNAME/OTHERREPOSITORY.git
Verify that the remote URL has changed.
git remote -v
# Verify new remote URL
origin https://github.com/USERNAME/OTHERREPOSITORY.git (fetch)
origin https://github.com/USERNAME/OTHERREPOSITORY.git (push)