Revert "Make HG pull faster by not cloning when not necessary"

This reverts commit c6d5991.

pontoon/sync/vcs/repositories.py

@@ -71,33 +71,15 @@ def pull(self, source=None, target=None, branch=None):
 class PullFromHg(PullFromRepository):
 
     def pull(self, source=None, target=None):
+        log.debug("Mercurial: Update repository.")
+
         source = source or self.source
         target = target or self.target
 
-        if os.path.exists(target):
-            log.debug("Mercurial: Update repository.")
-
-            # Undo local changes: discard uncommitted changes
-            command = ["hg", "update", "--clean"]
-            execute(command, target)
-
-            # Undo local changes: delete untracked files
-            command = ["hg", "--config", "extensions.strip=", "purge"]
-            execute(command, target)
-
-            # Undo local changes: discard local commits
-            command = ["hg", "--config", "extensions.strip=", "strip", "'roots(draft())'"]
-            execute(command, target)
-
-            command = ["hg", "pull", "-u"]
-            code, output, error = execute(command, target)
-
-            if code == 0:
-                return log.debug("Mercurial: Repository at " + source + " updated.")
-            else:
-                log.info("Mercurial: " + unicode(error))
+        # Undo local changes: Mercurial doesn't offer anything more elegant
+        command = ["rm", "-rf", target]
+        code, output, error = execute(command)
 
-        log.debug("Mercurial: Clone repository.")
         command = ["hg", "clone", source, target]
         code, output, error = execute(command)