How to clone a node without translate.

I have a site with multiple language. Assume I have a node (nid = 1) with origin languages is en and translate to es. And I clone this node with code:

$  node = Node::load(1); $  nodeDuplicate = $  node->createDuplicate(); $  nodeDuplicate->save(); 

or

$  node = Node::load(1); $  insert = $  node->isNew(); $  node->save(); 

all both are working. And I have a new node (nid = 2), and the new node have two content translate en, es same the node id 1.

But I don’t want clone all content translate. I only want to clone one language es or en. So how can do that?