how to change the link on a cloned form

Could you please give us some more details about your request. Since I was not able to figured out what you are asking. 

If you mean  getting embed code of related form, follow this guidance: https://www.jotform.com/help/34-Adding-a-form-to-a-web-page

If you mean creating a custom URL of a form, follow this guidance :

https://www.jotform.com/help/261-How-to-Create-a-Custom-URL-of-a-Form

If you need any further assistance from our side, please let us know. We would be glad to help you.