There’s no GitHub link, the add-on is inside Minetest when you search all available community plugins. Just type “mineclone” into the search bar and you’ll find two plugins. I use Mineclonia but Voxelibre is another one. Haven’t tried it though so can’t recommend.
Mineclonia is a fork of MineClone2, last time I tried them, they were quite simmilar (obviously). As far my experience goes, the saves are not 100% compatible (textures broke, but it remembered blocks) and same with the mods, some work, some fail. I would try both.
That’s my bad. It’s Mineclonia that you want. I confused the names since Mineclonia is a fork of Mineclone2. You can also check out Voxelibre. Apparently it’s also a clone.
I'm probably the only person in the world who hasn't played Minecraft.
We have a family Minetest server runnning Asuna since Summer 2023. Usually based around just crafting different things. Even for a few months we just put on creative mode and built two huge cities about 8,000 blocks apart and sky train connecting them, and then a third underground cave city about 2,000 blocks away.
We've had major upgrades of both Asuna and Minetest within the past few weeks so it's pretty exciting.