Hi Mark 
William gives good advice. If you want a “bodge” I have seen these lengthened, find some steel wire the same diameter, slide a thin tube of brass over the two ends and either solder or glue it together. This is NOT how I would fix a customers clock but if you just want a quick fix to see the clock running then it can save a bit of time, not to mention damaging the verge if you are not used to riveting yet.
Paul
