Git authentication over apache_mod_krb

Question

I'm using git repo with git-http-backend. In apache2 I have location what needs authentication for clone and push actions. When I protected it location with AuthType Basic all works is fine, git passes authentication and can clone and push, but if I change type to KerberosV5 git can't access to repo with correctly credentials. If I'm using my browser I have access to location what to protect kerberos.

git clone http://[email protected]/git/myapp.git
Initialized empty Git repository in /tmp/myapp/.git/
Password:
error: The requested URL returned error: 401 while accessing http://[email protected]/git/myapp.git/info/refs
fatal: HTTP request failed

and in apache error logs

[Fri Aug 06 17:15:50 2010] [debug] src/mod_auth_kerb.c(1579): [client 192.168.12.153]  kerb_authenticate_user entered with user (NULL) and auth_type KerberosV5 
[Fri Aug 06 17:15:50 2010] [debug] src/mod_auth_kerb.c(1579): [client 192.168.12.153]kerb_authenticate_user entered with user (NULL) and auth_type KerberosV5

git-core 1:1.7.1-1~bpo50+1 apache2 2.2.9-10+lenny8 libapache2-mod-auth-kerb 5.3-5

Answer 1

Problem in curl, because git in debian was compiled with curl option ANY_AUTH, and when git client try connect to webserver and first ask it negotiate auth and it can't do it, git don't try basic auth, because basic is lower security than negotiate. When I try curl --anyauth I can' get data from webserver too, but if I change --basic all works fine, problem in that I can't tell git what auth should use.