Update points to origin/nexedi

bin/crew

@@ -108,6 +108,7 @@ rescue Docopt::Exit => e
   exit 1
 end
 
+@origin_branch = "nexedi"
 String.use_color = args["--color"] || !args["--no-color"]
 @opt_keep = args["--keep"]
 @opt_verbose = args["--verbose"]
@@ -517,8 +518,8 @@ def update
       system "git fetch testing #{@crew_testing_branch}"
       system "git reset --hard testing/#{@crew_testing_branch}"
     else
-      system 'git fetch origin master'
-      system 'git reset --hard origin/master'
+      system 'git fetch origin ' + @origin_branch
+      system 'git reset --hard origin/' + @origin_branch
     end
   end