Unlike the Community Edition, Odoo Enterprise is not Open Source software; it is Open Core. This means you will find an official, public repository for Odoo 17 Enterprise on GitHub.
: This page provides the latest stable builds for Odoo 17 Enterprise, including versions for Windows (exe), Ubuntu/Debian (deb), and the generic source code. Why the GitHub Repository is Private Odoo 17 Enterprise Download Github
You cannot simply "download" Enterprise code from a public GitHub page. Access depends on your relationship with Odoo: Unlike the Community Edition, Odoo Enterprise is not