You are working with an Azure Repos repository named Repo1 and a Power BI Premium capacity that has Fabric-enabled features. This capacity includes two workspaces: Workspace1 and Workspace2. Workspaces have Git integration enabled. Your plan involves using Microsoft Power BI Desktop in combination with Workspace1 to make version-controlled modifications to a semantic model that is stored in Repo1. These modifications are to be built and subsequently deployed to Workspace2 through the use of Azure Pipelines. Your objective is to ensure that both the report and the semantic model definitions are stored as individual text files within a folder hierarchy. The solution should aim to minimize both development and maintenance efforts. What file format should you use to save these changes?