2 files changed, 18 insertions, 0 deletions

diff --git a/project.py b/project.py
index e4682e6a..5297a5cb 100644..100755
--- a/project.py
+++ b/project.py
@@ -2270,6 +2270,16 @@ class Project(object):
       if self._allrefs:
         raise GitError('%s cherry-pick %s ' % (self.name, rev))
 
+  def _LsRemote(self):
+    cmd = ['ls-remote']
+    p = GitCommand(self, cmd, capture_stdout=True)
+    if p.Wait() == 0:
+      if hasattr(p.stdout, 'decode'):
+        return p.stdout.decode('utf-8')
+      else:
+        return p.stdout
+    return None
+
   def _Revert(self, rev):
     cmd = ['revert']
     cmd.append('--no-edit')
diff --git a/subcmds/download.py b/subcmds/download.py
index e1010aa2..384af781 100644..100755
--- a/subcmds/download.py
+++ b/subcmds/download.py
@@ -62,6 +62,14 @@ If no project is specified try to use current directory as a project.
           ps_id = int(m.group(2))
         else:
           ps_id = 1
+          regex = r'refs/changes/%2.2d/%d/(\d+)' % (chg_id % 100, chg_id)
+          output = project._LsRemote()
+          if output:
+            rcomp = re.compile(regex, re.I)
+            for line in output.splitlines():
+              match = rcomp.search(line)
+              if match:
+                ps_id = max(int(match.group(1)), ps_id)
         to_get.append((project, chg_id, ps_id))
       else:
         project = self.GetProjects([a])[0]