Add exact irrlichtmt version to the clone command

diff --git a/README.md b/README.md
index 4fef8f0c04bd3000f106a10ba2e273647625c48c..6cc6c9634134714e562afaadc30a63146716e996 100644 (file)
--- a/README.md
+++ b/README.md
@@ -181,7 +181,7 @@ Download minetest_game (otherwise only the "Development Test" game is available)
 
 Download IrrlichtMt to `lib/irrlichtmt`, it will be used to satisfy the IrrlichtMt dependency that way:
 
-    git clone --depth 1 https://github.com/minetest/irrlicht.git lib/irrlichtmt
+    git clone --branch 1.9.0mt7 --depth 1 https://github.com/minetest/irrlicht.git lib/irrlichtmt
 
 Download source, without using Git: