git-archive not working correctly ?

Hi.

I have been playing with git-archive for and hour or so, but can't get it to pass "extra" options to tar as it's documented that it should, or am i reading the docs wrong ?

git-archive --format=<fmt> [--list] [--prefix=<prefix>/] [<extra>] [--remote=<repo>] <tree-ish> [path…]

<extra>
        This can be any options that the archiver backend understand.
        See next section.
        
I want to git tar the "--exclude=option", but i can't get it through.
Is this option only valid for the zip format with the options "-0" and
"-9" ?

Kind regards

Niki Guldbrand