[CP] Revert "Roll Clang from 6d667d4b261e to 7f374b6902fa" (#42896) (#42914)

diff --git a/DEPS b/DEPS
index 0c91b1e..5913f03 100644
--- a/DEPS
+++ b/DEPS
@@ -39,7 +39,7 @@
   # The list of revisions for these tools comes from Fuchsia, here:
   # https://fuchsia.googlesource.com/integration/+/HEAD/toolchain
   # If there are problems with the toolchain, contact fuchsia-toolchain@.
-  'clang_version': 'git_revision:7f374b6902fad9caed41284a57d573abe9ada9d1',
+  'clang_version': 'git_revision:6d667d4b261e81f325756fdfd5bb43b3b3d2451d',
 
   # The goma version and the clang version can be tightly coupled. If goma
   # stops working on a clang roll, this may need to be updated using the value