Identify error as failure to retrieve refresh token

connector/oidc/oidc.go

@@ -216,7 +216,7 @@ func (c *oidcConnector) Refresh(ctx context.Context, s connector.Scopes, identit
 	}
 	token, err := c.oauth2Config.TokenSource(ctx, t).Token()
 	if err != nil {
-		return identity, fmt.Errorf("oidc: failed to get token: %v", err)
+		return identity, fmt.Errorf("oidc: failed to get refresh token: %v", err)
 	}
 
 	return c.createIdentity(ctx, identity, token)