oc-mirror Fails with 'error: parsing reference "": could not parse reference:' Error

Issue

Running the oc-mirror command fails with the error:

$oc-mirror --config imageset-config.yaml docker://test.example.registry:8443 --dest-skip-tls
Logging to .oc-mirror.log
Checking push permissions for test.example.registry:8443
Creating directory: oc-mirror-workspace/src/publish
Creating directory: oc-mirror-workspace/src/v2
Creating directory: oc-mirror-workspace/src/charts
Creating directory: oc-mirror-workspace/src/release-signatures
error: parsing reference "": could not parse reference:

This issue does not occur in oc-mirror version v2.