In order to find your Hostname in cPanel, follow the steps provided below.
Scroll down the statistics, and you will find "Server Name".
The Hostname would be [ServerName].yourdomain.com. In this example, it would be alpha.clientexec.com.
Server Name and Hostname should not be confused. The Server Name can be titled anything you would like while the Hostname must be what you found in this article or in WHM.