I don't know if they are still available but I have a repair kit used for 100ft/30metre steel tapes as used on sites for setting out. It has several punched strips and a riveting tool. I would not imagine that the repair strips would be flexible enough for short tapes but what the hell, do as all the other posts suggest and buy a new one.
Best way I can think of to repair it is to get your missus to sew the inside of your pockets right across about half way down.
Thus making them less deep. . .
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