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That looks tidy. I always repair my jeans myself with an old sewing machine and the denim off cuts I keep from taking jeans up (the reality of buying selvedge denim when you have a 28" inside leg). I have a pair of Edwins that I've had for nearly 10 years that I've patched about 4 or 5 times now. I'm trying to go for the boro patchwork look and see how long I can make them last.
Darning repair will look like this
I've done it a few times myself. It's easy enough if you're handy with a sewing machine