Can't get git clone over https with proxy and invalid certificate...

Hi all,

I've been trying without success to clone a git repository over https.
I've got a complicated situation because I have a proxy which only
allows http/https and the server I'm trying to connect to has an
invalid certificate. I'm using git 1.5.6.4 and curl 7.18.1 compiled on
x86_64.

Ok, so I have created the following ~/.curlrc:
   netrc
   proxytunnel
   insecure
   proxy = http://proxyserver.com:8080
   proxy-user = proxyuser:proxypassword

accompanied by the following ~/.netrc:
   machine remoteserver.com
   login remoteuser
   password remotepassword

and the following ~/.gitconfig:
   [user]
      name = My Name
      email = my.em@il.com
   [http]
      sslVerify = false

All above files permissions are set to 600 and I have also set the
environment variables http_proxy, https_proxy and all_proxy (one never
knows) to:
   http://proxyuser:proxypassword@proxyserver.com:8080

Ok, now lets try:

$ wget -q --no-check-certificate
https://remoteuser@remoteserver.com/.git/HEAD && cat HEAD && rm HEAD
ref: refs/heads/master
$ curl https://remoteuser@remoteserver.com/.git/HEAD
ref: refs/heads/master
$ git clone https://remoteuser@remoteserver.com/.git/
Initialized empty Git repository in /home/user/.git/
error: Proxy requires authorization!
warning: remote HEAD refers to nonexistent ref, unable to checkout.

Both wget and curl work, but git won't! Any clues?

Thanks in advance and best regards,
-- Giovanni