Please just buy an extension cable and avoid blowing up innocent USB-C hardware:
I bought this one for that exact reason. Works well. Thunderbolt 3 USB-C Extension Cable, DISDIM USB 3.1 Type C Charging, Audio / Video Transfer and Data Sync Extend Adapter Cord [183cm/6FT] for MacBook Pro, Nintendo Switch and USB C HUB https://www.amazon.com/dp/B075MBS6JY/ref=cm_sw_r_cp_apa_r35rBbRTDBNFT
I'm in the same boat right, now I really want to get an extension cable, but since they are not really officially supported I don't know if it will wreak havoc on my CB, or if it will work at all. I fond this one which seems to have good reviews- https://www.amazon.com/Thunderbolt-Extension-DISDIM-Charging-Transfer/dp/B075MBS6JY/ref=sr_1_5?ie=UTF8&qid=1510006115&sr=8-5&keywords=USB+C+extension
https://www.amazon.com/DISDIM-Thunderbolt-Extension-Charging-Compatible/dp/B075MBS6JY
Is this the USB-C Extender you need?