--- a/hgext/largefiles/reposetup.py	Tue Jul 14 11:28:06 2020 -0700
+++ b/hgext/largefiles/reposetup.py	Tue Apr 14 16:43:54 2020 +0530
@@ -448,7 +448,7 @@
             lfutil.shortname + b'/' in f[0] for f in repo.store.datafiles()
         ):
             repo.requirements.add(b'largefiles')
-            repo._writerequirements()
+            scmutil.writereporequirements(repo)
 
     ui.setconfig(
         b'hooks', b'changegroup.lfiles', checkrequireslfiles, b'largefiles'