Description of problem:

When PipelineRun has defined metadata.generateName, the incoming webhook functionality will not find the PipelineRun and PAC controller returns: `cannot find pipelinerun windows11-qe-virtio-installer-run- for matching an incoming event in this repository`. When the I change the metadata.generateName to metadata.name the incoming webhook works.

https://redhat-internal.slack.com/archives/C0382KN768J/p1732520695203379

Prerequisites (if any, like setup, operators/versions):

OCP - 4.17
OCP Pipelines operator - 1.16.1

Steps to Reproduce

1) have PipelineRuns with metadata.generateName in .tekton folder (as. e.g. like here https://gitlab.cee.redhat.com/openshift-virtualization/windows-image-builder/-/blob/main/.tekton/windows-qe-virtio.yaml?ref_type=heads#L2)

2) Configure incoming webhook functionality
3) trigger `https://<PAC cluster URL>/incoming?secret=<Token>&repository=windows-image-builder&branch=main&pipelinerun=windows2k22-qe-virtio-installer-run`
4) Observe logs in PAC controller that it can't find the PipelineRun

Actual results:

PipelineRun is not triggered

Expected results:

PipelineRun is triggered

Reproducibility (Always/Intermittent/Only Once):

Always

Additional info (Such as Logs, Screenshots, etc):

PipelineRun definition and log from PAC controller are attached