These are just my personal notes as I was working through the New to ServiceNow training modules.

First you will need a Basic Auth Credential in ServiceNow that contains a GitHub Personal Access Token that can be used to authenticate to GitHub.

Check out my article Create GitHub Personal Access Token (PAT) Basic Auth Credential.

Let's say you created a Basic Auth Credential in ServiceNow that contains JohnDoe GitHub Personal Access Token.

Select All > Studio. In Studio, select your application. Select Source Control. You may need to select Edit Repository Configuration.

If you selected Edit Repository Configuration, enter your GitHub URL, select the credential you created, select a branch (such as main).

After you have imported a ServiceNow application from GitHub, after making some changes to the ServiceNow application, in Studio, select Source Control > Commit Changes.

Select the files that want to commit and select Continue.

Enter a commit message and selet Commit Files.

If the commit is successful, something like this should be displayed.

You should see the commit in your GitHub repository.