Russian GIT

Особенности настройки git под windows

Git for Windows Unicode Support

There are a few new settings for unicode support. Those might help you.

git config [--global] core.quotepath off
git config [--global] i18n.logoutputencoding utf8
git config [--global] i18n.commitencoding utf8
git config [--global] --unset svn.pathnameencoding