Relase 1.0 (1.12.x) is a release file of the Minecraft resource pack Texture Pack Of MC 1.14 - 1.21.x For Previous Versions, made for Minecraft 1.12.1, 1.12, 1.12.2. It was published on May 23, 2019 and is 0.7 MB in size. For the full description, screenshots and every other version, visit the Texture Pack Of MC 1.14 - 1.21.x For Previous Versions resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.