Show repo's revlog format on verify only if it doesn't match the default format.
This makes it easier to run the tests with different revlog formats.
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions