message: Use 13.0.0 tag for building LLVM 13.0
diff: @@ -130,7 +130,7 @@ def checkout_LLVM(component, version_LLVM, target_dir, from_validation, verbose)
  if version_LLVM == "trunk":
  GIT_TAG="main"
  elif version_LLVM == "13_0":
  - GIT_TAG="origin/release/13.x"
  + GIT_TAG="llvmorg-13.0.0"
  elif version_LLVM == "12_0":
  GIT_TAG="llvmorg-12.0.1"
  elif version_LLVM == "11_1":
  