Checksum mismatch when downloading versioned file

[cyberduck]

@dkocher created the issue

Reproduction steps:

1. Login to AWS via Cyberduck
2. Create a folder (bucket)
3. Turn on versioning on the folder
4. Add a text file.
5. Edit the text file and save it so it creates a new version.
6. In Cyberduck, choose View->Show Hidden Files, and refresh the display. You'll see the older version of the file greyed out.
7. Select the old version of the file, and attempt to Download, and observe the error.
   ​
   It appears that Cyberduck expects the MD5 of the current version rather than that of the version it is downloading, as the mismatch is always reported against the hash of the current version.

[cyberduck]

@ylangisc commented

In c29b8ae.