git commit --amend --author troubles.

Hello,

Just did a 'git init .' and then committed some files. git rightfully
told me to check my user name and suggested the '--amend'
and '--author' flags to change the author of my first commit.
I tried it immediately but 'git log' shows the initial user as if
nothing has changed. The amended commit message also
shows the original name (in the comment).

git version 1.7.0.3

  -- aghiles