[clang_toolchain] Fix clang_toolchain.git_revision property of canary builds

This was meant to be the llvm revision, not the fuchsia.git revision.

Fixed: 43680
Change-Id: Ie3346da3476ac8ba00c2234ac8709f90ed2d0239
diff --git a/recipes/clang_toolchain.py b/recipes/clang_toolchain.py
index b1446b1..cb19121 100644
--- a/recipes/clang_toolchain.py
+++ b/recipes/clang_toolchain.py
@@ -166,8 +166,9 @@
       cipd_dir = api.path['start_dir'].join('cipd')
       pkgs = api.cipd.EnsureFile()
       if api.platform.arch == 'arm' and api.platform.bits == 64:
-        pkgs.add_package('fuchsia/third_party/clang/${platform}',
-                         'git_revision:ea93d7d6421612e9ea51b321eaf97fbdd64fe39b')
+        pkgs.add_package(
+            'fuchsia/third_party/clang/${platform}',
+            'git_revision:ea93d7d6421612e9ea51b321eaf97fbdd64fe39b')
         pkgs.add_package('fuchsia/sdk/core/linux-amd64', 'latest', 'sdk')
       else:
         pkgs.add_package('fuchsia/third_party/clang/${platform}', 'goma')
@@ -216,19 +217,20 @@
       step_result = api.step(
           'xcrun', ['xcrun', '--show-sdk-path'],
           stdout=api.raw_io.output(name='sdk-path', add_output_log=True),
-          step_test_data=
-          lambda: api.raw_io.test_api.stream_output('/some/xcode/path'))
+          step_test_data=lambda: api.raw_io.test_api.stream_output(
+              '/some/xcode/path'))
       target_sysroot = host_sysroot = step_result.stdout.strip()
     else:  # pragma: no cover
       assert False, 'unsupported platform'
 
     env = {
-        'CC': ('%s %s' % (api.goma.goma_dir.join('gomacc'),
-                          cipd_dir.join('bin', 'clang')))
-              if use_goma else cipd_dir.join('bin', 'clang'),
+        'CC':
+            ('%s %s' %
+             (api.goma.goma_dir.join('gomacc'), cipd_dir.join('bin', 'clang')))
+            if use_goma else cipd_dir.join('bin', 'clang'),
         'CFLAGS':
-            '-O3 -fPIC --target=%s --sysroot=%s' % (target_triple,
-                                                    target_sysroot),
+            '-O3 -fPIC --target=%s --sysroot=%s' %
+            (target_triple, target_sysroot),
         'AR':
             cipd_dir.join('bin', 'llvm-ar'),
         'NM':
@@ -498,7 +500,7 @@
       project = 'fuchsia'
       refs = api.gitiles.refs('https://%s/%s' % (host, project))
       ref = 'refs/heads/master'
-      revision = refs.get(ref, 'HEAD')
+      fuchsia_rev = refs.get(ref, 'HEAD')
 
       # Do a full integration build. This will use the just-built toolchain
       # to build all of Fuchsia to check whether there are any regressions.
@@ -507,7 +509,7 @@
               properties={
                   'clang_toolchain': {
                       'git_repository': repository,
-                      'git_revision': revision,
+                      'git_revision': fuchsia_rev,
                   },
                   'build.clang_toolchain': {
                       'type': 'isolated',
@@ -516,7 +518,8 @@
               },
               tags={
                   'buildset':
-                      'commit/gitiles/%s/%s/+/%s' % (host, project, revision),
+                      'commit/gitiles/%s/%s/+/%s' %
+                      (host, project, fuchsia_rev),
                   'gitiles_ref':
                       ref,
               }),
@@ -539,17 +542,17 @@
         bucket='ci',
         git_repo='https://fuchsia.googlesource.com/third_party/llvm-project',
         revision='a' * 40,
-    ) + api.runtime(is_luci=True, is_experimental=False) + api.platform.name(os)
-           + api.properties(platform=os + '-amd64'))
+    ) + api.runtime(is_luci=True, is_experimental=False) +
+           api.platform.name(os) + api.properties(platform=os + '-amd64'))
 
     yield (api.test('prod-%s-x64' % os) + api.buildbucket.ci_build(
         project='fuchsia',
         bucket='prod',
         git_repo='https://fuchsia.googlesource.com/third_party/llvm-project',
         revision='a' * 40,
-    ) + api.runtime(is_luci=True, is_experimental=False) + api.platform.name(os)
-           + api.properties(platform=os + '-amd64') + api.gitiles.refs(
-               'refs', ('refs/heads/master', 'b' * 40)))
+    ) + api.runtime(is_luci=True, is_experimental=False) +
+           api.platform.name(os) + api.properties(platform=os + '-amd64') +
+           api.gitiles.refs('refs', ('refs/heads/master', 'b' * 40)))
 
   yield (api.test('linux-arm64') + api.buildbucket.ci_build(
       project='fuchsia',