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# If this is a Git repository, just use the existing fetch_objects implementation.
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if getattr(repo, "fetch_objects", None) is not None:
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return repo.fetch_objects(determine_wants, graph_walker, None, progress)
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wants = determine_wants(self.get_refs())
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commits_to_send = set([self.mapping.revision_id_foreign_to_bzr(w) for w in wants])