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self.get_vfs_only_url('remote')).open_repository()
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# Make a branch in that repo in an old format that isn't the default
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# branch format for the repo.
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format = remote_backing_repo.bzrdir.cloning_metadir()
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format._branch_format = BzrBranchFormat5()
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remote_transport = remote_repo.bzrdir.root_transport.clone('branch')