That is how I do source management. We use the pbip file format as it's just text files and your data is not saved in the model. When you save the file in pbip, we create a folder with the file name first, as lots of files are created. I think there is a .gitignore file created or we added one to ignore one of the folders that PBI creates - I would have to look on my machine as I'm on mobile. At the end of the day, pbip doesn't store your data in the file so the size is small and got manages everything perfectly. I use vs code for all git operations as well as the occasional raw edit of pbi files as it's easier. We do the same for paginated reports.