Include datasources as part of the project when importing from Version Control (Git)

Currently my experience when saving a composite project and/or importing a project from VCS is that the datasource is not included as part of the files stored in Version control. Is there any reason why datasources aren't included by default? Currently it is a manual chore of uploading/downloading individual datasources when pulling from VCS, and it would be a huge timesaver to just include datasources along with the other project files when saving to a VCS such as Git.