-THIS OPTION IS EXPERIMENTAL! SHA-256 support is experimental and still
-in an early stage. A SHA-256 repository will in general not be able to
-share work with "regular" SHA-1 repositories. It should be assumed
-that, e.g., Git internal file formats in relation to SHA-256
-repositories may change in backwards-incompatible ways. Only use
-`--object-format=sha256` for testing purposes.
+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.