How to deploy process builder using Apache ANT Tool in Salesforce?

 Package.xml

<?xml version="1.0" encoding="UTF-8"?>  
  
<Package xmlns="http://soap.sforce.com/2006/04/metadata">  
    <types>    
        <members>API_Name-2</members>   
        <name>Flow</name>    
    </types>  
    <version>46.0</version>  
</Package>  

This will retrieve a version 2 of the "API_Name" process.