diff --git a/subcmds/help.py b/subcmds/help.py
index 6e0238a..a2814e1 100644
--- a/subcmds/help.py
+++ b/subcmds/help.py
@@ -17,9 +17,9 @@
 from formatter import AbstractFormatter, DumbWriter
 
 from color import Coloring
-from command import PagedCommand
+from command import PagedCommand, MirrorSafeCommand
 
-class Help(PagedCommand):
+class Help(PagedCommand, MirrorSafeCommand):
   common = False
   helpSummary = "Display detailed help on a command"
   helpUsage = """
diff --git a/subcmds/init.py b/subcmds/init.py
index ad28a61..d1fb431 100644
--- a/subcmds/init.py
+++ b/subcmds/init.py
@@ -17,12 +17,12 @@
 import sys
 
 from color import Coloring
-from command import InteractiveCommand
+from command import InteractiveCommand, MirrorSafeCommand
 from error import ManifestParseError
 from remote import Remote
 from git_command import git, MIN_GIT_VERSION
 
-class Init(InteractiveCommand):
+class Init(InteractiveCommand, MirrorSafeCommand):
   common = True
   helpSummary = "Initialize repo in the current directory"
   helpUsage = """
diff --git a/subcmds/sync.py b/subcmds/sync.py
index 8050e51..fff1281 100644
--- a/subcmds/sync.py
+++ b/subcmds/sync.py
@@ -19,11 +19,11 @@
 import sys
 
 from git_command import GIT
-from command import Command
+from command import Command, MirrorSafeCommand
 from error import RepoChangedException, GitError
 from project import R_HEADS
 
-class Sync(Command):
+class Sync(Command, MirrorSafeCommand):
   common = True
   helpSummary = "Update working tree to the latest revision"
   helpUsage = """
diff --git a/subcmds/version.py b/subcmds/version.py
index 4f19a0c..83e77d0 100644
--- a/subcmds/version.py
+++ b/subcmds/version.py
@@ -14,11 +14,11 @@
 # limitations under the License.
 
 import sys
-from command import Command
+from command import Command, MirrorSafeCommand
 from git_command import git
 from project import HEAD
 
-class Version(Command):
+class Version(Command, MirrorSafeCommand):
   common = False
   helpSummary = "Display the version of repo"
   helpUsage = """