[infra] Switch to older Clang

The new version appears to be missing libLTO.dylib on Mac which is
breaking the LTO build.

Change-Id: I674b2e81dee53d15df696454cce87aaf19a7a95c
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/4920
Reviewed-by: Julie Hockett <juliehockett@google.com>
diff --git a/infra/recipes/gn.expected/cq_mac.json b/infra/recipes/gn.expected/cq_mac.json
index 6b0aa0a..b84aab8 100644
--- a/infra/recipes/gn.expected/cq_mac.json
+++ b/infra/recipes/gn.expected/cq_mac.json
@@ -77,7 +77,7 @@
       "-root",
       "[START_DIR]/cipd",
       "-ensure-file",
-      "infra/ninja/${platform} version:1.8.2\nfuchsia/clang/${platform} goma",
+      "infra/ninja/${platform} version:1.8.2\nfuchsia/clang/${platform} git_revision:b920a7f65b13237dc4d5b2b836b29a954fff440a",
       "-json-output",
       "/path/to/tmp/json"
     ],
@@ -88,7 +88,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@",
       "@@@STEP_LOG_LINE@json.output@      {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-goma------------\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:b92\", @@@",
       "@@@STEP_LOG_LINE@json.output@        \"package\": \"fuchsia/clang/resolved-platform\"@@@",
       "@@@STEP_LOG_LINE@json.output@      }, @@@",
       "@@@STEP_LOG_LINE@json.output@      {@@@",