Change metrics derived from software repositories are known to be effective for bug prediction. However, bug prediction based on change metrics is limited to file-level because existing SCM repositories stores file histories. To tackle fine-grained (method- level) bug prediction, we try to establish fine-grained versioning for repositories. This paper presents an automatic technique construct- ing software repositories that can manage method histories. We uti- lize Git, one software configuration management (SCM) systems, and reconstruct fine-grained versioning repositories from existing repositories. We utilize these method-level versioning repositories for method-level bug prediction with one eclipse related project. The result shows that method-level change metrics are effective for method-level bug prediction.