"           <command> [<args>]";
 
 const char git_more_info_string[] =
-       N_("See 'git help <command>' for more information on a specific command.");
+       N_("'git help -a' and 'git help -g' lists available subcommands and some\n"
+          "concept guides. See 'git help <command>' or 'git help <concept>'\n"
+          "to read about a specific subcommand or concept.");
 
 static struct startup_info git_startup_info;
 static int use_pager = -1;
                        static char git_dir[PATH_MAX+1];
                        is_bare_repository_cfg = 1;
                        setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0);
+                       setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);
                        if (envchanged)
                                *envchanged = 1;
                } else if (!strcmp(cmd, "-c")) {