object-format-disclaimer.txt « Documentation - git.kernel.org/pub/scm/git/git.git - Unnamed repository; edit this file 'description' to name the repository.
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.