when use targetCatalog, mirror failed with error: 
error: error rebuilding catalog images from file-based catalogs: error copying image docker://registry.redhat.io/abc/redhat-operator-index:v4.13 to docker://localhost:5000/abc/redhat-operator-index:v4.13: initializing source docker://registry.redhat.io/abc/redhat-operator-index:v4.13: (Mirrors also failed: [localhost:5000/abc/redhat-operator-index:v4.13: pinging container registry localhost:5000: Get "https://localhost:5000/v2/": http: server gave HTTP response to HTTPS client]): registry.redhat.io/abc/redhat-operator-index:v4.13: reading manifest v4.13 in registry.redhat.io/abc/redhat-operator-index: unauthorized: access to the requested resource is not authorized 

oc-mirror 4.16

always

1) Use following isc to do mirror2mirror for v1:    
kind: ImageSetConfiguration
apiVersion: mirror.openshift.io/v1alpha2
storageConfig:
  local:
    path: /tmp/case60597
mirror:
  operators:
  - catalog: registry.redhat.io/redhat/redhat-operator-index:v4.13
    targetCatalog: abc/redhat-operator-index
    packages:
    - name: servicemeshoperator  
`oc-mirror --config config.yaml docker://localhost:5000 --dest-use-http`

1) mirror failed with error:
info: Mirroring completed in 420ms (0B/s)
error: error rebuilding catalog images from file-based catalogs: error copying image docker://registry.redhat.io/abc/redhat-operator-index:v4.13 to docker://localhost:5000/abc/redhat-operator-index:v4.13: initializing source docker://registry.redhat.io/abc/redhat-operator-index:v4.13: (Mirrors also failed: [localhost:5000/abc/redhat-operator-index:v4.13: pinging container registry localhost:5000: Get "https://localhost:5000/v2/": http: server gave HTTP response to HTTPS client]): registry.redhat.io/abc/redhat-operator-index:v4.13: reading manifest v4.13 in registry.redhat.io/abc/redhat-operator-index: unauthorized: access to the requested resource is not authorized

1) no error.

compared with oc-mirror 4.15.9, can't reproduce this issue