the clone spell description says as following
At any time after the clone matures, if the original creature dies, its soul transfers to the clone, provided that the soul is free and willing to return. The clone is physically identical to the original and has the same personality, memories, and abilities, but none of the original’s equipment. The original creature’s physical remains, if they still exist, become inert and can’t thereafter be restored to life, since the creature’s soul is elsewhere.
So here it says 2 things, first it says the soul is transferred to the clone, then it says the clone has none of the equipment. So okay, you don't keep the hammer, but that should be interpreted as a result of the items not magically being transported to your clone. The clone does contain all your memories and abilities, but the
weapon bond ability doesn't explain that the bonding happens between your weapon and your soul, so that's something the DM would have to grant you. If the DM grants that the hammer is bonded to your soul then I would say you have a good case to argue that you should be able to summon the hammer.
It seems to me the DM has to make some decisions here as the descriptions are a bit soft..