diff --git a/buildbot/osuosl/master/config/builders.py b/buildbot/osuosl/master/config/builders.py
--- a/buildbot/osuosl/master/config/builders.py
+++ b/buildbot/osuosl/master/config/builders.py
@@ -964,11 +964,12 @@
                     vs="autodetect",
                     target_arch='x64',
                     depends_on_projects=['llvm','clang','clang-tools-extra','lld','cross-project-tests'],
-                    clean=False,
+                    clean=True,
                     extra_configure_args=[
                         "-DCMAKE_BUILD_TYPE=Release",
                         "-DCLANG_ENABLE_ARCMT=OFF",
                         "-DCLANG_ENABLE_CLANGD=OFF",
+                        "-DLLVM_CCACHE_BUILD=ON",
                         "-DLLVM_DEFAULT_TARGET_TRIPLE=x86_64-sie-ps5",
                         "-DLLVM_INCLUDE_EXAMPLES=OFF",
                         "-DLLVM_TARGETS_TO_BUILD=X86",