call "git log" only once instead of per branch in fetching revisions. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9142 e93f8b46-1217-0410-a6f0-8f06a7374b81
call "git log" only once instead of per branch in fetching revisions. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9142 e93f8b46-1217-0410-a6f0-8f06a7374b81