What fields are required for GitHub issue-tracking integration?

For GitHub issue-tracking integration, the correct combination includes the Username and an OAuth Token. An OAuth Token is a more secure method of authentication compared to using a password, as it typically provides enhanced security features such as scoped access and does not require sharing of credentials directly.

Using OAuth Tokens helps avoid the risk associated with hardcoding passwords or using authentication in a less secure manner. Additionally, OAuth Tokens can be revoked without affecting the user's primary credentials, providing greater control and security measures for integration.

While other options may include components like API tokens or passwords, these approaches can expose security vulnerabilities or fall short of GitHub's best practices for authentication in integrations. The reliance on OAuth Tokens in conjunction with the username offers a robust and secure approach for integrating issue tracking with GitHub.