puncture wound

I had a branch come down and puncture my metal roof. Do I have to remove the whole roof to that point and replace that one panel or is there a way to patch the hole? I have a interlocking roof that is made to look like shingles. I have seen some suggest on some sites that you can glue a patch over the hole using roofing cement and others that say you can solder a new piece. I have some left over pieces from the installation. but they are not very smooth and if I solder two pieces together, then I will have to remove the paint and that can't be good. Any Ideas?