'70 SIIA, 88", 2.25 petrol, etc.

I recently replaced my clutch master and slave cylinders. All was well and good.

Then, as I was driving yesterday, the clutch went suddenly all the way to the floor. I assumed the seals in the slave or master had suddenly failed, but upon inspection that is not the case. Instead, I found a tiny hole in the steel clutch hydraulic line -- it appears that the steel clutch line had been rubbing against the heater line for some time and eventually had worn through. So, I have a hole in the line, passenger side of truck, near the top in a relatively accessible location.

I'm wondering about patching or splicing the line, rather than replacing it. As you may know to replace that line (hydraulic clutch line from the clutch master to the junction on the firewall) requires removal of the hood (no biggie), driver side wing (pain in the butt), and other peripherals. And, the truck is sitting on a residential street now, not in my garage, making it more difficult to make it a big production.

So my query is about options to mend, not replace, the line while it is still in the truck. I've never flared brake/clutch lines or the like before (though willing to learn)...and I'm (sadly) not a welder, etc. though I've worked with soldering copper etc. in the past. I guess one option would be a fix that would need to hold for 10 minutes to get the truck in gear and time enough to drive it home and get it in the driveway where I could actually replace the whole line...

Thanks in advance for any help or ideas.