Facing the possibility of food from cloned animals ending up on supermarket shelves within a few years, consumer groups and lawmakers are sounding the alarm about potential dangers and looking to put new restrictions on the sale of such products in California. Several bills are now pending in the Legislature that would place new regulations on food created as a result of cloning or genetic engineering. One such bill, Senate Bill 63, by Sen. Carole Migden, D-San Francisco, would require meat and milk produced from cloned animals to carry a label identifying it as having a cloned origin.