Install Tekton
kubectl apply --filename https://storage.googleapis.com/tekton-releases/pipeline/latest/release.yaml
Install Tekton Triggers
kubectl apply --filename https://storage.googleapis.com/tekton-releases/triggers/latest/release.yaml
kubectl apply --filename https://storage.googleapis.com/tekton-releases/triggers/latest/interceptors.yaml
Install Git clone task
kubectl apply -f https://raw.githubusercontent.com/tektoncd/catalog/main/task/git-clone/0.9/git-clone.yaml