Water pipe punctured - how to repair without much demolition?

Hi,

I just wanted to replace a roller holder and while dismantling the old holder, I loosened a screw when suddenly water shot out of the dowel with considerable pressure. It’s actually a mystery to me why this wasn’t noticed during the installation over 10 years ago. Now I have turned off the main valve and pressed silicone into the dowel. I reopened the main valve and the pipe now seems to be completely tight, which at least prevents water damage.
My question: which tool do you recommend to expose the pipe with as little demolition as possible and what do I need for the repair?
I can upload photos if necessary.

Thanks in advance

Main valve reopened and the pipe now seems completely sealed, which at least prevents water damage.

Are you sure the water is not dripping into the masonry?

My question: which tool is recommended to expose the pipe with as little demolition as possible

Hammer and chisel or rotary hammer.

What do I need for the repair?

Pipe clamp, new pipe, press tool or other things. Depends on the damage. But it won’t be done with “just a little” damage caused for the repair.

Exactly as describes: Open up and take local action. And do so very promptly.

Thanks for the answers! I will probably let a professional do it then.
Regards