--- a/hgext/remotefilelog/shallowrepo.py	Wed Oct 03 13:54:45 2018 -0400
+++ b/hgext/remotefilelog/shallowrepo.py	Wed Oct 03 14:01:04 2018 -0400
@@ -25,7 +25,6 @@
     constants,
     contentstore,
     datapack,
-    extutil,
     fileserverclient,
     historypack,
     metadatastore,
@@ -199,7 +198,7 @@
                 cmd.append('--repack')
             if revs:
                 cmd += ['-r', revs]
-            extutil.runbgcommand(cmd, encoding.environ)
+            procutil.runbgcommand(cmd, encoding.environ)
 
         def prefetch(self, revs, base=None, pats=None, opts=None):
             """Prefetches all the necessary file revisions for the given revs