[thechriswalker]

From what I just read, the "shun" method means that you can rewrite history by adding a shun, rebuilding a copy, then switching copies.

Not db rewrite, but the same end result.

edit: bad english

[SQLite]

That won't work because the SHA1 hashes won't match up.

If you accidentally check-in proprietary or sensitive content that you didn't mean to publish, you can shun that content. Shunning leaves a hole in your history. There is no way to replace that hole with different content.