diff -r c53008253113 -r 6a06155dfaef mercurial/narrowspec.py
--- a/mercurial/narrowspec.py	Mon Jul 19 15:34:17 2021 +0200
+++ b/mercurial/narrowspec.py	Mon Jul 19 08:44:49 2021 +0200
@@ -351,6 +351,6 @@
     addedmatch = matchmod.intersectmatchers(addedmatch, sparse.matcher(repo))
     newfiles = [f for f in pctx.manifest().walk(addedmatch) if f not in ds]
     for f in newfiles:
-        ds.normallookup(f)
+        ds.update_file(f, p1_tracked=True, wc_tracked=True, possibly_dirty=True)
     _writeaddedfiles(repo, pctx, newfiles)
     repo._updatingnarrowspec = False