Pictures:
47 -53 link
54 - 55 1st Bowden cable
I suppose it's possible to rig-up a clamp to hold the cable housing and maybe attached a carburetor choke swivel (for cable center) to the arm of the 47-53 knob.
Nah! Too much trouble. Look on ebay and buy a used cable, for example (
https://www.ebay.com/itm/313263487817). More than needed but you never know when you need spares.
You can buy a new repop knob to replace the ratty one.