We pass `--no-history` to gclient, so there will be no version for electron.
--- a/electron/script/get-git-version.py
+++ b/electron/script/get-git-version.py
@@ -20,7 +20,7 @@
 
 try:
   output = subprocess.check_output(
-      ['git', 'describe', '--tags', '--abbrev=0'],
+      ['cat', 'ELECTRON_VERSION'],
       cwd=os.path.abspath(os.path.join(os.path.dirname(__file__), '..')),
       stderr=subprocess.PIPE,
       universal_newlines=True)
