After running the oc-mirror --config=test-config.yaml file://disk-my-test the oc-mirror-workspace/results-########/release-signatures/ directory is empty

Running the oc apply -f of the release-signtatures results in:
"error: error reading [./oc-mirror-workspace/results-1694277509/release-signatures/]: recognized file extensions are [.json .yaml .yml]__"

oc-mirror version
~~~
Client Version: version.Info{Major:"", Minor:"", GitVersion:"4.13.0-202308290326.p0.g2f7e7bc.assembly.stream-2f7e7bc", GitCommit:"2f7e7bc237611601702ae32c3055a44f9694bf97", GitTreeState:"clean", BuildDate:"2023-08-29T03:45:07Z", GoVersion:"go1.19.10 X:strictfipsruntime", Compiler:"gc", Platform:"linux/amd64"}

use oc-mirror to create a tar of the images

imageset
~~~
kind: ImageSetConfiguration
apiVersion: mirror.openshift.io/v1alpha2
storageConfig:
  local:
    path: ./metadata/redhat-catalogs
mirror:
  operators:
  - catalog: registry.redhat.io/redhat/redhat-operator-index:v4.13
    targetCatalog: my-redhat-v413-catalog
    packages:
    ......

1. oc-mirror --config=test-config.yaml file://disk-my-test
2. ls -ltr disk-testcertified412/oc-mirror-workspace/src/release-signatures/
  total 0