diff --git a/recipes/README.recipes.md b/recipes/README.recipes.md
index 4b298edfc6..9d163812fb 100644
--- a/recipes/README.recipes.md
+++ b/recipes/README.recipes.md
@@ -222,12 +222,12 @@ Returns (Path): The "depot_tools" root directory.
 
 Wrapper for easy calling of gclient steps.
 
-— **def [break\_locks](/recipes/recipe_modules/gclient/api.py#287)(self):**
+— **def [break\_locks](/recipes/recipe_modules/gclient/api.py#288)(self):**
 
 Remove all index.lock files. If a previous run of git crashed, bot was
 reset, etc... we might end up with leftover index.lock files.
 
-— **def [calculate\_patch\_root](/recipes/recipe_modules/gclient/api.py#309)(self, patch_project, gclient_config=None, patch_repo=None):**
+— **def [calculate\_patch\_root](/recipes/recipe_modules/gclient/api.py#310)(self, patch_project, gclient_config=None, patch_repo=None):**
 
 Returns path where a patch should be applied to based patch_project.
 
@@ -246,7 +246,7 @@ Returns:
   If patch_project is not given or not recognized, it'll be just first
   solution root.
 
-— **def [checkout](/recipes/recipe_modules/gclient/api.py#235)(self, gclient_config=None, revert=RevertOnTryserver, inject_parent_got_revision=True, \*\*kwargs):**
+— **def [checkout](/recipes/recipe_modules/gclient/api.py#235)(self, gclient_config=None, revert=RevertOnTryserver, inject_parent_got_revision=True, extra_sync_flags=None, \*\*kwargs):**
 
 Return a step generator function for gclient checkouts.
 
@@ -272,7 +272,7 @@ Args:
   override (bool) - If True, will forcibly set revision and custom_vars
     even if the config already contains values for them.
 
-&emsp; **@property**<br>&mdash; **def [is\_blink\_mode](/recipes/recipe_modules/gclient/api.py#274)(self):**
+&emsp; **@property**<br>&mdash; **def [is\_blink\_mode](/recipes/recipe_modules/gclient/api.py#275)(self):**
 
 Indicates wether the caller is to use the Blink config rather than the
 Chromium config. This may happen for one of two reasons:
@@ -283,9 +283,9 @@ Chromium config. This may happen for one of two reasons:
 
 &mdash; **def [resolve\_revision](/recipes/recipe_modules/gclient/api.py#147)(self, revision):**
 
-&mdash; **def [runhooks](/recipes/recipe_modules/gclient/api.py#268)(self, args=None, name='runhooks', \*\*kwargs):**
+&mdash; **def [runhooks](/recipes/recipe_modules/gclient/api.py#269)(self, args=None, name='runhooks', \*\*kwargs):**
 
-&mdash; **def [set\_patch\_project\_revision](/recipes/recipe_modules/gclient/api.py#341)(self, patch_project, gclient_config=None):**
+&mdash; **def [set\_patch\_project\_revision](/recipes/recipe_modules/gclient/api.py#342)(self, patch_project, gclient_config=None):**
 
 Updates config revision corresponding to patch_project.
 
diff --git a/recipes/recipe_modules/gclient/api.py b/recipes/recipe_modules/gclient/api.py
index 9aa1c4279f..38db8a8a59 100644
--- a/recipes/recipe_modules/gclient/api.py
+++ b/recipes/recipe_modules/gclient/api.py
@@ -233,7 +233,8 @@ class GclientApi(recipe_api.RecipeApi):
             cfg.solutions[0].custom_vars[custom_var] = val
 
   def checkout(self, gclient_config=None, revert=RevertOnTryserver,
-               inject_parent_got_revision=True, **kwargs):
+               inject_parent_got_revision=True, extra_sync_flags=None,
+               **kwargs):
     """Return a step generator function for gclient checkouts."""
     cfg = gclient_config or self.c
     assert cfg.complete()
@@ -248,7 +249,7 @@ class GclientApi(recipe_api.RecipeApi):
 
     sync_step = None
     try:
-      sync_step = self.sync(cfg, **kwargs)
+      sync_step = self.sync(cfg, extra_sync_flags=extra_sync_flags, **kwargs)
 
       cfg_cmds = [
         ('user.name', 'local_bot'),