name : object-format-disclaimer.txt Note: At present, there is no interoperability between SHA-256 repositories and SHA-1 repositories. Historically, we warned that SHA-256 repositories may later need backward incompatible changes when we introduce such interoperability features. Today, we only expect compatible changes. Furthermore, if such changes prove to be necessary, it can be expected that SHA-256 repositories created with today's Git will be usable by future versions of Git without data loss.