How to unbundle, uncook, rebuild and pack texture files
Extract the textures with uncook -p into a folder of your choice. TGA is recommended for CLI version 1.5.1 (latest).
Edit the TGA file with software such as Photoshop or Krita.
Choose the textures you wish to repack and copy them to another folder (e.g. MODDED), keeping the subfolder structure (the \base folder needs to be the first folder inside the MODDED folder)
Both .tga and .xbm files are required in the MODDED folder
e.g. judy_body_wet.xbm AND judy_body_wet.tga
Do not replace existing vanilla archives
Import
Run import -p "MODDED FOLDER PATH" -k this will apply the new TGA texture to the XBM.
Pack
Run pack -p "MODDED FOLDER PATH", this will create a new .archive file.
Install
Copy the packed .archive file into the mod folder of your game: Cyberpunk 2077\archive\pc\mod (create this folder if necessary)