Power BI and Microsoft Fabric use Azure DevOps as the core component for their version and source control. The integration with Azure DevOps and Git helps maintain a copy of the source code and version it. It allows access to it anytime needed, plus the multi-development aspect added. In this article and video, you will learn how this integration works.
Read my blog article here to learn more:
https://radacad.com/version-control-in-power-bi-and-fabric