fix: report a refused forge as unread, not gone

scripts/profile_sync.py

@@ -1840,10 +1840,24 @@ def build_report(
                 f"annotated for version {other}, not the documented one",
             )
         if flag:
-            return verify_at_pin(
+            result = verify_at_pin(
                 part, fetch(PIN, part.path, part.start, tokens), tokens, hashes
             )
-        return anchor_across_views(part, tokens)
+        else:
+            result = anchor_across_views(part, tokens)
+        # A forge that refused the request said nothing about the file:
+        # git.eden-emu.dev answers 403 to scripts, and nine citations of
+        # eden-nightly read "absent at HEAD" for a file that exists.
+        owner, _actual = resolve_path(part.path, part.start, tuple(tokens))
+        if (
+            result.status in ("GONE", "AMBIGUOUS")
+            and (owner.repo.host, owner.repo.slug) in mute
+        ):
+            return PartResult(
+                part, "UNCHECKED", None, None, None, [],
+                f"{owner.repo.host}/{owner.repo.slug} refused the request, not read",
+            )
+        return result
 
     staged = []
     for entry_name, ref, tokens, hashes, ref_parts, citation in refs:

tests/test_profile_sync.py

@@ -1219,6 +1219,19 @@ class TestBuildReport(unittest.TestCase):
             ],
         }
 
+    def test_a_refusing_forge_reads_as_unread_not_gone(self):
+        """git.eden-emu.dev answers 403 to scripts: the muted repository's
+        citations read "absent at HEAD" for files that exist."""
+        def refuse(repo, sha, path, cache_dir, offline=False):
+            raise profile_sync.upstream.UpstreamError(f"{path}: HTTP 403")
+
+        profile_sync.upstream.fetch_file = refuse
+        with contextlib.redirect_stderr(io.StringIO()):
+            report = build_report("test", self._profile(["a.c:2"]), self.dir)
+        statuses = [p.status for e in report.entries for p in e.parts]
+        self.assertEqual(statuses, ["UNCHECKED"])
+        self.assertIn("refused", report.entries[0].parts[0].reason)
+
     def test_counts_by_status(self):
         self.files[("pinsha", "a.c")] = ["x", "hit", "y"]
         self.files[("headsha", "a.c")] = ["pad", "x", "hit", "y"]