Try Documentalist,
my app that offers fast, offline access to 190+ programmer API docs.
My cookie:
touch ~/.gitcookies
chmod 0600 ~/.gitcookies
git config --global http.cookiefile ~/.gitcookies
tr , \\t <<\__END__ >>~/.gitcookies
.googlesource.com,TRUE,/,TRUE,2147483647,o,git-kkowalczyk.gmail.com=1/-5d3lr2YzreAO2G3xP_MBA_97TtHaQNEbcycTv2DMME
__END__
On Windows:
git config --global http.cookiefile "%USERPROFILE%\.gitcookies"
powershell -noprofile -nologo -command Write-Output ".googlesource.com`tTRUE`t/`tTRUE`t2147483647`to`tgit-kkowalczyk.gmail.com=1/-5d3lr2YzreAO2G3xP_MBA_97TtHaQNEbcycTv2DMME" >>"%USERPROFILE%\.gitcookies"