In response to [this](https://github.com/kubernetes-sigs/multi-tenancy/issues/1494#issuecomment-876697942):
>Replaced by https://github.com/kubernetes-sigs/hierarchical-namespaces/issues/12
>
>/close
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Currently, the tree labels on namespaces can be edited without webhook blocking it. HNC will re-reconcile the namespace to update the tree labels.
We need to have our webhooks to block edits on namespace tree labels.