Help rewire my microphone headset please!

Help rewire my microphone headset please!
My cats chewed through my $70 gaming headset. There are three wires (they all look copper). One is covered in thin green wire, one in blue, and one in red. There is white insulation. How do I rewire? Do I connect all the copper wires underneath the color wires and then connect the colored wires separately?

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