Improve the help text for 'repo init'
Signed-off-by: Shawn O. Pearce <sop@google.com>
diff --git a/subcmds/init.py b/subcmds/init.py
index 3a5c766..90b76e8 100644
--- a/subcmds/init.py
+++ b/subcmds/init.py
@@ -35,9 +35,20 @@
from the server and is installed in the .repo/ directory in the
current working directory.
-The optional <manifest> argument can be used to specify an alternate
-manifest to be used. If no manifest is specified, the manifest
-default.xml will be used.
+The optional -b argument can be used to select the manifest branch
+to checkout and use. If no branch is specified, master is assumed.
+
+The optional -m argument can be used to specify an alternate manifest
+to be used. If no manifest is specified, the manifest default.xml
+will be used.
+
+Switching Manifest Branches
+---------------------------
+
+To switch to another manifest branch, `repo init -b otherbranch`
+may be used in an existing client. However, as this only updates the
+manifest, a subsequent `repo sync` (or `repo sync -d`) is necessary
+to update the working directory files.
"""
def _Options(self, p):