pacman subscription refers to branch that DNE

[dlbewley]

https://github.com/open-cluster-management/application-samples/blob/main/subscriptions/pacman/subscription.yaml#L10
indicates apps.open-cluster-management.io/github-branch: pacman-sample

Results:

$ oc apply -k subscriptions/channel
$ oc apply -k subscriptions/pacman

$ oc describe subscriptions/pacman-sample -n pacman-sample
...
Status:
  Last Update Time:  2021-08-16T23:53:35Z
  Phase:             PropagationFailed
  Reason:            failed to initialize Git connection, err: Failed to clone git: https://github.com/open-cluster-management/application-samples.git branch: refs/heads/pacman-sample err: couldn't find remote ref "refs/heads/pacman-sample"

[dlbewley]

The same bad reference also exists in subscriptions/subscribe-all/subscription.yaml