ssh-pull.con commit diff-index --cc shows a 3-way diff between HEAD, index and working tree. (cb2b9f5)
   1#define COUNTERPART_ENV_NAME "GIT_SSH_PUSH"
   2#define COUNTERPART_PROGRAM_NAME "git-ssh-push"
   3#define MY_PROGRAM_NAME "git-ssh-pull"
   4#include "ssh-fetch.c"