Rebasing onto non-nightly builds fails because the script looks for the name to match a specific pattern.

4.12

always

1.
2.
3.

$ ./scripts/auto-rebase/rebase.sh to quay.io/openshift-release-dev/ocp-release:4.12.1-x86_64 quay.io/openshift-release-dev/ocp-release:4.12.1-aarch64
...
Initialized empty Git repository in /home/jdelft/src/github.com/openshift/microshift/_output/staging/arm64/service-ca-operator/.git/
From https://github.com/openshift/service-ca-operator
 * branch            299b7097a49385fdd4f86eccedc07f3a192e2504 -> FETCH_HEAD
 * [new tag]         v3.11.0    -> v3.11.0
HEAD is now at 299b709 Merge pull request #203 from openshift-cherrypick-robot/cherry-pick-202-to-release-4.12

+ [[ 4.12.1-x86_64 =~ (.+)-([0-9]{4}-[0-9]{2}-[0-9]{2}-[0-9]{6}) ]]
+ echo 'Failed to match regex against amd64 image tag'
Failed to match regex against amd64 image tag
+ echo release_image_amd64: quay.io/openshift-release-dev/ocp-release:4.12.1-x86_64
release_image_amd64: quay.io/openshift-release-dev/ocp-release:4.12.1-x86_64
+ exit 1