git remote set-url origin new.git.url/here
# Overwriting an existing git url: git remote set-url origin <git_url>
git remote set-url origin https://hostname/USERNAME/REPOSITORY.git
git remote add origin git@git.assembla.com:portfolio/space.space_name.git
git remote add origin git@github.com:nikhilbhardwaj/abc.git
$ git remote set-url origin https://github.com/USERNAME/REPOSITORY.git