MekanismThings_CTM-Fusion_devbuild0.1.zip is a release file of the Minecraft resource pack Mekanism CTM w/ Fusion, made for Minecraft 1.20.1. It was published on January 7, 2024 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Mekanism CTM w/ Fusion resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.