diff --git a/django/db/models/sql/where.py b/django/db/models/sql/where.py
index d3e08cc65e..4b758e7adc 100644
--- a/django/db/models/sql/where.py
+++ b/django/db/models/sql/where.py
@@ -67,12 +67,12 @@ class WhereNode(tree.Node):
             else:
                 where_parts.append(c)
         having_node = (
-            self.__class__(having_parts, self.connector, self.negated)
+            self.create(having_parts, self.connector, self.negated)
             if having_parts
             else None
         )
         where_node = (
-            self.__class__(where_parts, self.connector, self.negated)
+            self.create(where_parts, self.connector, self.negated)
             if where_parts
             else None
         )
@@ -171,16 +171,11 @@ class WhereNode(tree.Node):
                 self.children[pos] = child.relabeled_clone(change_map)
 
     def clone(self):
-        clone = self.__class__.create(
-            children=None,
-            connector=self.connector,
-            negated=self.negated,
-        )
+        clone = self.create(connector=self.connector, negated=self.negated)
         for child in self.children:
             if hasattr(child, "clone"):
-                clone.children.append(child.clone())
-            else:
-                clone.children.append(child)
+                child = child.clone()
+            clone.children.append(child)
         return clone
 
     def relabeled_clone(self, change_map):
diff --git a/django/utils/tree.py b/django/utils/tree.py
index e82afe9bf7..7ee5b01444 100644
--- a/django/utils/tree.py
+++ b/django/utils/tree.py
@@ -45,8 +45,7 @@ class Node:
         return "<%s: %s>" % (self.__class__.__name__, self)
 
     def __deepcopy__(self, memodict):
-        obj = Node(connector=self.connector, negated=self.negated)
-        obj.__class__ = self.__class__
+        obj = self.create(connector=self.connector, negated=self.negated)
         obj.children = copy.deepcopy(self.children, memodict)
         return obj
 
@@ -93,7 +92,7 @@ class Node:
         node other got squashed or not.
         """
         if self.connector != conn_type:
-            obj = self.create(self.children, self.connector, self.negated)
+            obj = self.copy()
             self.connector = conn_type
             self.children = [obj, data]
             return data