--- /dev/null
+--- rpm-5.4.12/rpmio/rpmpython.c.rpmpythontrunc~ 2013-08-09 03:05:39.809947086 +0200
++++ rpm-5.4.12/rpmio/rpmpython.c 2013-08-09 03:25:25.097372593 +0200
+@@ -229,6 +229,8 @@ fprintf(stderr, "==> %s(%p,%s,%p)\n", __
+ if (sys_stdout != NULL && PycStringIO_OutputCheck(sys_stdout)) {
+ PyObject * o = (*PycStringIO->cgetvalue)(sys_stdout);
+ *resultp = (PyString_Check(o) ? PyString_AsString(o) : "");
++ PyObject_CallMethod(sys_stdout, "seek", "i",0);
++ PyObject_CallMethod(sys_stdout, "truncate", NULL);
+ } else
+ *resultp = "";
+ }