Handling Project References in Visual Studio 2022 with Git

I can't see to make Git recognize project references.

I have a Website as the master repo in GitHub. There a numerous class libraries that are used by the website. The class libraries are included as project references in the WebSite solution in Visual studio 2022. How do I handle those project references in Git. Do I need to create seperate repos for each project reference? I have tried that but Git does not regognize those repos only the master repo.