#include "cache.h"
 #include "config.h"
 #include "builtin.h"
+#include "object-store.h"
+#include "repository.h"
 #include "commit.h"
 #include "run-command.h"
 #include <signal.h>
 
        memset(&signature_check, 0, sizeof(signature_check));
 
-       ret = check_commit_signature(lookup_commit(oid), &signature_check);
+       ret = check_commit_signature(lookup_commit(the_repository, oid),
+                                    &signature_check);
        print_signature_buffer(&signature_check, flags);
 
        signature_check_clear(&signature_check);