Yes, you can use the ST-Link debugger with the Patch Submodule.
The pins are available but you will need to solder in the male mini JTAG to the Patch SM, or place the male header inside of the female headers on the debugger side.
We’re going to put these these up on the Electrosmith site soon but here is a part number for the JTAG header: 20021111-00010T4LF
Hope this helps!