Use # instead of - for the git hash so it can be filtered out by the try server

Review URL: http://codereview.chromium.org/3007040

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@55225 0039d316-1c4b-4281-b951-d872f2087c98

scm.py

@@ -310,7 +310,7 @@ class GIT(object):
   def GetPatchName(cwd):
     """Constructs a name for this patch."""
     short_sha = GIT.Capture(['rev-parse', '--short=4', 'HEAD'], cwd)[0].strip()
-    return "%s-%s" % (GIT.GetBranch(cwd), short_sha)
+    return "%s#%s" % (GIT.GetBranch(cwd), short_sha)
 
   @staticmethod
   def GetCheckoutRoot(path):