diff -r 167b22a906f3 -r 83d537162894 mercurial/hgweb/webcommands.py
--- a/mercurial/hgweb/webcommands.py	Thu Apr 05 14:03:33 2018 -0700
+++ b/mercurial/hgweb/webcommands.py	Thu Apr 05 21:32:59 2018 -0700
@@ -248,7 +248,7 @@
 
     def getsearchmode(query):
         try:
-            ctx = web.repo[query]
+            ctx = scmutil.revsymbol(web.repo, query)
         except (error.RepoError, error.LookupError):
             # query is not an exact revision pointer, need to
             # decide if it's a revset expression or keywords