The first is to revise the inflation rate objective upwards, taking account of imported inflation, or only to look at non-imported inflation and to ignore the rest. This strategy is complex because first and foremost it is not clear how much the imported inflation rate will be going forward, which is not under the control of the central bank.
In addition, an upward revision risks bringing a loss of credibility and of being interpreted as a change in strategy. Moreover, a higher inflation objective implies an increase in inflation expectations, and thus of long-term interest rates, which must sooner or later be accompanied by an increase in short-term rates.