Add the GitHub repo as a remote reference for the existing project. Perform a git push operation with the -u and -f switches. Verify that the existing project’s files have been pushed to GitHub. How ...

To link a new Git branch to your remote GitHub or GitLab repo, you must use the 'set upstream' Git push command. This walkthrough shows you how.

GitHub has enabled push protection by default for all public repositories to prevent accidental exposure of secrets such as access tokens and API keys when pushing new code.