diff -r b74e128676d4 -r 5105a9975407 hgext/fastannotate/commands.py
--- a/hgext/fastannotate/commands.py	Tue Sep 28 13:59:01 2021 -0700
+++ b/hgext/fastannotate/commands.py	Tue Sep 28 15:11:22 2021 -0700
@@ -15,6 +15,7 @@
     encoding,
     error,
     extensions,
+    logcmdutil,
     patch,
     pycompat,
     registrar,
@@ -75,7 +76,7 @@
         def bad(x, y):
             raise error.Abort(b"%s: %s" % (x, y))
 
-        ctx = scmutil.revsingle(repo, rev)
+        ctx = logcmdutil.revsingle(repo, rev)
         m = scmutil.match(ctx, pats, opts, badfn=bad)
         for p in ctx.walk(m):
             yield p
@@ -317,7 +318,7 @@
         )
     if ui.configbool(b'fastannotate', b'unfilteredrepo'):
         repo = repo.unfiltered()
-    ctx = scmutil.revsingle(repo, rev)
+    ctx = logcmdutil.revsingle(repo, rev)
     m = scmutil.match(ctx, pats, opts)
     paths = list(ctx.walk(m))
     if util.safehasattr(repo, 'prefetchfastannotate'):