If you're just cutting and reattaching, there's no difference or pin out to follow. Just match the colors and crimp them.

These type aren't pretty, but they'll get the job done https://smile.amazon.com/XVIEONR-UY2-K2-Connectors-Gel-Filled/dp/B09PHBX478

To do this properly you could use https://smile.amazon.com/Iwillink-Ethernet-Junction-Cat6-Punch/dp/B09YRPK4S6

or crimp a shielded RJ-45 connector on each end and use a coupler like https://smile.amazon.com/Coupler-Ethernet-Extender-Adapter-Female/dp/B07WR1N7FX

edit: removed original suggestion since it's least likely to work effecctively