die("revision walk setup failed");
traverse_commit_list(&revs, show_commit, NULL, ¬_shallow_list);
+ if (!not_shallow_list)
+ die("no commits selected for shallow requests");
+
/* Mark all reachable commits as NOT_SHALLOW */
for (p = not_shallow_list; p; p = p->next)
p->item->object.flags |= not_shallow_flag;