Bug fix for setting 'unknown' repository APIVersion

[alerickson]

PR Summary

Resolves #1347

PR Context

PR Checklist

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• Summarized changes
• Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
• This PR is ready to merge and is not Work in Progress.
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• Breaking changes
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  • Documentation needed
    • Issue filed:
• User-facing changes
  • Not Applicable
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  • Documentation needed
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• Testing - New and feature
  • N/A or can only be tested interactively
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  • I have considered the user experience from a tooling perspective and don't believe tooling will be impacted.
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[anamnavi]

LGTM