diff --git a/benchmarks/basic_commands.py b/benchmarks/basic_commands.py
index d470d9f0d218480796ab1a2a395752119c1c188f_YmVuY2htYXJrcy9iYXNpY19jb21tYW5kcy5weQ==..a7f5bd587454c3706944cf1d3b0364c839b16490_YmVuY2htYXJrcy9iYXNpY19jb21tYW5kcy5weQ== 100644
--- a/benchmarks/basic_commands.py
+++ b/benchmarks/basic_commands.py
@@ -22,5 +22,6 @@
         timings = []
         filename = None
 
+        # purge any uncommitted changes
         self.hg('revert', '--all')
         self.hg('--config', 'extensions.purge=', 'purge', '--all')
@@ -25,5 +26,6 @@
         self.hg('revert', '--all')
         self.hg('--config', 'extensions.purge=', 'purge', '--all')
+        # make sure dirstate is up to date.
         self.hg('status')
 
         if mode == 'create':