I have set the %HOME% environment variable on my Windows installation.
In that folder I have put a file called _netrc. Inside that file I have:
machine code.google.com login <logon> password <censored>
But both, MSYS and Tortoise keep asking for a password.
I am using Windows 7, MSYSGit and TortoiseGit. Why does this not work?
I have found an article on Stack Overflow that said it must be named _netrc and not .netrc, but none of them work.
Assuming you did everything that was described in this answer and you set the right location for your %HOME% environment variable (confirm this with an echo %HOME% and check that in that location there's a _netrc file), there must something be wrong in the usage of your repository.
The URL to clone a Google Code repository is https://user.googlecode.com/svn/trunk (see this Google link for that).
So, you have to do a
git svn clone https://user.googlecode.com/svn/trunk
in order to import your Google repository.