And here's the strip which explains how that entire Muppets/Kamino/clone thing happened.

At least one of the possible explanations. What really happened? Well, that depends on what you want to believe...

This is the last intermission strip before we begin Episode VII, one week from the publication of this strip. Thanks for waiting out the time until the release of Episode IX with us. We needed to do that to make sure where we were going with our story for Episodes VII to IX.

Oh my. Here we go again...

Transcript

{Kashyyyk, after the Battle of Kashyyyk, when Order 66 was executed}
Yoda: Chewbacca, my old friend, no place in the Galaxy safe for us any more is. Wield an oppressive Galactic regime, Anakin will.
Chewbacca: Indeed. We needs must obscure our identities if we hope to survive.
Yoda: A plan, I have. To Kamino we will go. Have clone bodies made. Swap our minds into them.
Chewbacca: What of these bodies? Mere exanimate husks shall they become?
Yoda: Into them the clone minds will go. A perfect disguise we shall have, as our old bodies go on adventures while we lay low on Kamino.
Chewbacca: What of Padmé's nascent children?
Yoda: Exchange minds with Kaminoan children I will, before leaving them with Bail Organa and Obi-Wan. None the wiser shall any be.
Chewbacca: This is going to cause an awful imbroglio for somebody to untangle later...
Yoda: Our problem it won't be.
{beat}
Chewbacca: What shall we do on Kamino?
Yoda: Always wanted to run a variety show, I have...