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and (result_repo is None or result_repo.make_working_trees())):
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wt = result.create_workingtree(accelerator_tree=accelerator_tree,
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hardlink=hardlink, from_branch=result_branch)
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if wt.path2id('') is None:
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wt.set_root_id(self.open_workingtree.get_root_id())
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except bzr_errors.NoWorkingTree:
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def clone_on_transport(self, transport, revision_id=None,