if len(whs) > 1 {
		return fmt.Errorf("expected a single webhook for default revision")
	}
	webhook := whs[0]
	for i := range webhook.Webhooks {
		wh := webhook.Webhooks[i]
		// this is an abomination, but if this isn't a per-revision webhook, we want to make it ineffectual
		// without deleting it. Add a nonsense match.
		wh.NamespaceSelector = util.NeverMatch
		wh.ObjectSelector = util.NeverMatch
		webhook.Webhooks[i] = wh
	}