$ kubectl get pod -n ingress-nginx proxy ingress-controller-8rgck -oyaml | grep image:
image: k8s.gcr.io/ingress-nginx/controller:v0.49.0
image: k8s.gcr.io/ingress-nginx/controller:v0.49.0
testuser@wsl:~$ kubectl exec -it -n ingress-nginx ingress-controller-8rgck -- bash
bash-5.1$ /nginx-ingress-controller --version
-------------------------------------------------------------------------------
NGINX Ingress controller
Release: v0.49.0
Build: 05a3d144de71933a43d49fd2ea38ef06e76bdaca
Repository: https://github.com/kubernetes/ingress-nginx
nginx version: nginx/1.20.1