A difference is detected even though the role has not been changed

[sinsoku]

Summary

It's always detected as a diff even though I haven't changed the role.

Steps to reproduce

$ cat ecschedule.yaml
region: ap-northeast-1
cluster: default
rules:
- name: hello-world
  scheduleExpression: cron(0 0 1 * ? *)
  taskDefinition: hello-world:1
  role: service-role/AWS_Events_Invoke_Hello_World
  launch_type: FARGATE
  platform_version: LATEST
  network_configuration:
    aws_vpc_configuration:
      subnets:
      - subnet-04e6e052c7848b1f4
      - subnet-0a707ad91535e027e
      security_groups:
      - sg-0ab440f589fd44d8e
      assign_public_ip: DISABLED
  propagateTags: TASK_DEFINITION

[sinsoku]

I confirmed that it is fixed by changing the code as follows.

diff --git rule_getter.go rule_getter.go
index 7491627..5a60d28 100644
--- rule_getter.go
+++ rule_getter.go
@@ -41,10 +41,7 @@ func (rg *ruleGetter) getRule(ctx context.Context, r *cloudwatchevents.Rule) (*R
                        return nil, nil
                }
                target := &Target{TargetID: targetID}
-
-               if role := *t.RoleArn; role != rg.roleArn {
-                       target.Role = strings.TrimPrefix(role, rg.roleArnPrefix)
-               }
+               target.Role = strings.TrimPrefix(*t.RoleArn, rg.roleArnPrefix)

                taskCount := *ecsParams.TaskCount
                if taskCount != 1 {

However, I don't know if I can remove this condition, so I reported it as an issue instead of a pull request.