--- a/checker.py	Thu Jul 07 14:24:22 2016 +0800
+++ b/checker.py	Thu Jul 07 14:27:13 2016 +0800
@@ -153,7 +153,7 @@
     if config['scm'] == 'git':
         if not git_clone(config['url'], source):
             return False
-    if config['scm'] == 'hg':
+    elif config['scm'] == 'hg':
         if not hg_clone(config['url'], source):
             return False
 
@@ -163,14 +163,14 @@
     if config['scm'] == 'git':
         if not git_status():
             return False
-    if config['scm'] == 'hg':
+    elif config['scm'] == 'hg':
         if not hg_summary():
             return False
 
     if config['scm'] == 'git':
         if not git_show():
             return False
-    if config['scm'] == 'hg':
+    elif config['scm'] == 'hg':
         if not hg_log():
             return False
 
@@ -214,7 +214,7 @@
 
         if config['scm'] == 'git':
             files = git_files(linter['include'], linter.get('exclude', []))
-        if config['scm'] == 'hg':
+        elif config['scm'] == 'hg':
             files = hg_files(linter['include'], linter.get('exclude', []))
         if files is False:
             return False