filenames in repo are in CP1251; I have linux and UTF-8

Hi list! Most of our developers use msysgit which stores filenames in
CP1251 encoding. Two of us use cygwin and linux.

When checkout on both linux and cygwin, Russian filenames are garbled.

On Cygwin it even worse, because the conversion of invalid UTF-8 chars
to Unicode, made by Cygwin is irreversible, causing git to miss
the files it've just checked out. Workaround for Cygwin is to change
LANG from "C.UTF-8" to "ru_RU.CP1251". It fixes filenames, but brakes
everything else: log (fixed by i18n.logOutputEncoding), status, show,
diff

Unlike on Cygwin, LANG has no effect for git filenames on Linux. Good
thing, there's no conversion to unicode, so files aren't lost at
checkout.

Question: is there a way to tell git on Linux to use UTF-8 filenames
for the working tree, while storing them in CP1251?