CIH 1.0 for MC 1.12.2 is a release file of the Minecraft mod Conflict in Harmony Backported for Forge, made for Minecraft 1.12.2. It was published on August 23, 2020 and is 0.8 MB in size. For the full description, screenshots and every other version, visit the Conflict in Harmony Backported mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.