If the new svn root URL given with the svn-remote.<repo>.rewriteRoot config option
(or by the --rewrite-root option to 'git svn init') contains a username
(such as 'svn+ssh://username@example.com/repo'), find_by_url() cannot find
the repository URL, because the URL contained in the commit message does have
the username removed.
Signed-off-by: Dévai Tamás <devait@mailbox.sk> Acked-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>