Last experiment pushing to stage failed with:

[validate]   ImageRef: quay.io/rhdh/iib@sha256:7a9e28a2dc9621279cb4d0fd6402840e6c590a1392281be84663755bb5884c9a
[validate]   Reason: The image has a 'quay.expires-after' label set to '6w'

I've removed all the expiry dates from the hub/op/bundle images; now need to do the same for the FBCs.

Then try pushing all the 1.4 images (8 of them) to stage.

If the snapshots don't contain the latest content (as reported in KONFLUX-6086), here's how to manually create a snapshot: https://konflux-ci.dev/docs/how-tos/testing/integration/override-snapshots/