Unexpected failures in pull-gateway-api-verify caused by verify-codegen.sh

[snorwin]

When opening a PR recently, I’ve noticed that the pull-gateway-api-verify job sometimes fails during execution of verify-codegen.sh:

 /home/prow/go/src/sigs.k8s.io/gateway-api/apis/v1alpha2/referencegrant_types.go:52:6: printer columns applied to version "v1alpha2" not in CRD
2025/10/17 07:24:10 not all generators ran successfully
exit status 1
make[1]: *** [Makefile:75: update-codegen] Error 1
make[1]: Leaving directory '/home/prow/go/src/sigs.k8s.io/gateway-api'
�[0;31mTest FAILED: hack/../hack/verify-codegen.sh 

https://prow.k8s.io/view/gs/kubernetes-ci-logs/pr-logs/pull/kubernetes-sigs_gateway-api/4183/pull-gateway-api-verify/1979085575281446912

It looks like a race condition during the code generation, but I haven’t been able to identify the exact root cause yet.

[snorwin]

/cc @rikatz @shaneutt