How to clone a node without translations
A suggestion : use -&gt;removeTranslation() to get rid of the languages you don't want to be cloned.

Example to get rid of 'es language' so that we clone only the english version :

$langcodetoremove = 'es';
$node = \Drupal\node\Entity\Node::load(1);
$node-&gt;removeTranslation($langcodetoremove);
$nodeDuplicate = $node-&gt;createDuplicate();
$nodeDuplicate-&gt;save();


hope this helps