You can change the name of the Odoo.sh project from this option. The Project Name in the input will be used to generate your production URL. Development builds also use this project name as a prefix. In this case, the URL of our feature branch will be something like https://parthgajjar-odooshdemo-feature-branch-260887.dev.odoo.com:
This option will change the production URL, but you cannot get rid of *.odoo.com. If you want to run a production branch on a custom domain, you can add your custom domain in the settings tab of the production branch. You will also need to add a CNAME entry in your DNS manager.