Fix traceback cause to a debug message

bin/is

@@ -50,7 +50,7 @@ def c_init_repo(args):
         if len(repos) != 1:
             raise Exception("Please select one repository")
         Repository.create(repos[0])
-        debug("Repository: %s" % args[0])
+        debug("Repository: %s" % repos[0])
     except Exception as e:
         raise Exception("init repo failed: %s" % e)