GitHub Importer: Enhance logging around API calls to GitHub

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As seen in #341974 (closed) it would be beneficial to log info about API calls before we make them in case the far end(GitHub) times out or throws a different exception through octokit.

See this suggestion about github_identifiers as a possible thing to augment areas like this with(any line before we reach out to GitHub's octokit that calls an API would be helpful).

Related to #341974 (closed).