SSL certificate password storage?

I'm accessing a Git repository over an HTTPS transport, where client
certificates are required.  My certificate requires a password to use,
and Git prompts me for this every time I use it -- it's starting to
get a little old.  I've got Subversion set up to use Gnome-Keyring for
credentials, so I only have to unlock that once per session.  Is there
something similar for Git?  Is it planned?  If not, is there a good
place to make feature requests?

R/
James