struct git_var {
        const char *name;
-       char *(*read)(void);
+       const char *(*read)(void);
 };
 static struct git_var git_vars[] = {
        { "GIT_COMMITTER_IDENT", git_committer_info },
        if (argc != 2) {
                usage(var_usage);
        }
+
+       setup_git_directory();
        setup_ident();
        val = NULL;