The Installation Guide [1] makes reference to some deployments:

-------------- Erroneous! --------------------------------------------------

$ oc rollout restart -n <crw-namespace-name> deployment/codeready-workspaces-operator
$ oc rollout restart -n <crw-namespace-name> deployment/codeready-workspaces/keycloak
$ oc rollout restart -n <crw-namespace-name> deployment/codeready-workspaces

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The names found in a default deployment of CRW are:

--------------------------- Correct names -------------------------------------

deployment/codeready-operator
deployment/keycloak
deployment/codeready

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[1] https://access.redhat.com/documentation/en-us/red_hat_codeready_workspaces/2.5/html/installation_guide/configuring-che_crw#on_already_running_codeready_workspaces_installations