If you want to change the git repository that your project is connected to, try these steps:
Visit your project's build settings page.
Press the "Change Repo or Connection Type" button in the "Source" section.
Select how you'd like to connect to your repository from one of the options, then click the "Next" button.
If you selected the "Manual" connection type, enter the repository's SSH.
Otherwise, select the repository from the list of available options. You might need to auth with the git provider if you haven't already.
Click the "Save" button.
Done! All new bundles will now pull from your updated repository.