How to fix a leather saddlebag?
Options 1) Put another sturdy bag inside. Fill up that bag and secure it to the top of the saddlebag somehow (tie handles or something else creative). 2) There should be stitch holes left were the needle went through the leather. Buy some coat thread at the fabric store and a thick strong needle (tell them you’re sewing leather and ask for help), use a whip stitch to sew it back together. 3) Line the area inside the bag with a big ol patch of duck tape to temporarily stick it back together. If you put duck tape on the outside, too, this will be even better, but it will leave a sticky residue. Put a garbage bag inside the saddle bag to keep your clothes sticky-tape-free. This might be not be a good idea depending on how hot the area will get. With any of these options, a cobbler should be able to fix it for you properly when your trip is over.