Cracked fuel line

I recently had to have my alternator replaced and also got my plugs and wires replaced at the same time. As the mechanic was showing me his work, I happened to notice that the hose connecting to the 90 degree fuel rail supply was split. I asked the mechanic if that was an issue of concern and he was dismissive, saying it wasn't and that I should just monitor it to make sure the crack does not get worse. I took him at his word and left it at that, but something about the whole interaction has not sit right with me.

I have continued to monitor it and there is no further expansion of the crack. The area around the connector is dry, no evidence of any leakage, and no odors of gas. But I'm still concerned about it. Should I have it repaired ASAP? Or could I band-aid fix it with something like a worm gear clamp at the end of the connector as a safety net?

Advice greatly appreciated, thank you.