Why won't "git rebase -Xrenormalize -i $REBASE_SHA" do anything?

Hello,

I've added "* text=auto" to an existing repo with a completely linear history.

Now, as expected, every rebase operation gives me lots of conflicts, which are hard to resolve.

So I'd like to clean up the history:

  $ git rebase -Xrenormalize -i $REBASE_SHA

But this turns out to be a no-op? It says immediately

  Successfully rebased and updated refs/heads/wip-normalize

without even the counter which is usually output to show progress during an interactive rebase as it is working through the rebase-todo. I can confirm that nothing has happened by checking the sha of the branch.

So, what am I missing? How would I renormalize all the commits of a branch? The branch has linear history, no merges there.

Thanks,