Possible Clues:

• Carry on fighting like a ram and make it fast
• Although heavy, this will make things fast
• How rams might continue to fight over the hole
• Knob for fastening
• Although heavy, one may press it
• Continue to fight in a sheepish way, although with enough weight to get through the hole
• Secure clothes in fashion, however, at first
• It's not the cask that's been overturned that needs a hole for 2 down
• Do rams continue to fight to get into a hole?
• It's not the swift tale that has to be done up