I've kept most of my Git repos in my OneDrive for the past few years. It's worked great.
As many others have said, OneDrive For Business is really more of a SharePoint + Groove document sharing / collaboration thing for businesses documents (as the name kind of implies). While it does similar things from a generic corporate user point of view, the mechanics are pretty different. OneDrive For Business works well for the same kinds of use cases that SharePoint does (mostly documents), but I wouldn't put source code in there.
As many others have said, OneDrive For Business is really more of a SharePoint + Groove document sharing / collaboration thing for businesses documents (as the name kind of implies). While it does similar things from a generic corporate user point of view, the mechanics are pretty different. OneDrive For Business works well for the same kinds of use cases that SharePoint does (mostly documents), but I wouldn't put source code in there.