Restore compatibility for GitSampleRepoRule

[MarkEWaite]

Restore compatibility for GitSampleRepoRule

I forgot that there are other consumers of the Git plugin test suite.

Plugin BOM automated tests detected the problem.

Testing done

mvn clean verify passes and the previous implementation is restored.

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue