--- a/mercurial/narrowspec.py	Fri Jul 09 00:25:14 2021 +0530
+++ b/mercurial/narrowspec.py	Wed Jul 21 22:52:09 2021 +0200
@@ -343,11 +343,14 @@
     for f in sorted(status.ignored):
         repo.ui.status(_(b'not deleting ignored file %s\n') % uipathfn(f))
     for f in clean + trackeddirty:
-        ds.drop(f)
+        ds.update_file(f, p1_tracked=False, wc_tracked=False)
 
     pctx = repo[b'.']
+
+    # only update added files that are in the sparse checkout
+    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