Our CI / testplatform team are seeing inexplicably long delays when OpenShift Builds try to pull image content as input prior to building the image. Some corresponding "end" messages to go with the "start" messages that already exist was deemed helpful in their diagnostic efforts. so they easily demarcate when the openshift/builder image calls out into the vendored buildah/containers code.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.8.2 bug fix and security update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2021:2438