deep checkout so we actually get tag names in CI

build.gradle

@@ -20,6 +20,7 @@ group 'baritone'
 def vers = 'git describe --always --tags --dirty'.execute().text.trim();
 if (!vers.startsWith("v")) {
     println "git doesn't appear to be installed!"
+    println "using version number: " + project.mod_version
     version project.mod_version
 } else {
     version vers.substring(1)