diff --git a/.github/buildcheck/tests/test_sharedfiles.py b/.github/buildcheck/tests/test_sharedfiles.py
index 588239a..4bc286d 100644
--- a/.github/buildcheck/tests/test_sharedfiles.py
+++ b/.github/buildcheck/tests/test_sharedfiles.py
@@ -71,11 +71,16 @@ def test_write_recomputes_the_hashes_and_keeps_the_comments(self):
     def test_sibling_differences_are_warnings_not_failures(self):
         self.manifest(f"{A}  one.sh\n")
         others = {"srcmorph": f"{B}  one.sh\n", "streambuffer": f"{A}  one.sh\n"}
-        code, err = self.run_main(others=others)
+        # Pinned: the repository being checked is never fetched, and unpinned it came from
+        # GITHUB_REPOSITORY -- so in BitcoinAddressFinder's own CI the unreachable sibling this
+        # test expects was skipped and the test failed there alone.
+        with mock.patch.object(sharedfiles, "current_repo", return_value="java-llama.cpp"):
+            code, err = self.run_main(others=others)
         self.assertEqual(code, 0)
         self.assertIn("::warning::one.sh differs from srcmorph's one.sh", err)
         self.assertNotIn("streambuffer's", err)
         self.assertIn("could not read BitcoinAddressFinder", err)
+        self.assertNotIn("java-llama.cpp", err)
 
     def test_unknown_arguments(self):
         self.manifest("")
diff --git a/.github/shared-files.sha256 b/.github/shared-files.sha256
index ad00426..4cf1766 100644
--- a/.github/shared-files.sha256
+++ b/.github/shared-files.sha256
@@ -19,7 +19,7 @@ ff2aaec95e53916ea340a0a291bf0f57e0011522aedb486622b1fb1cac136865  .github/buildc
 561efd3f26d7728e475c8ce83c10b4761a6703b585b7b2a7ab052df10f73166c  .github/buildcheck/tests/helpers.py
 4985f25fa177bd79a79335742adfd0da0431e101124b4e7e214906b56ae903de  .github/buildcheck/tests/test_workflow.py
 cbe504ad081ba31ec16e11c11f879c64179ca7741bf0b1d1318a7fc969ed67dd  .github/buildcheck/tests/test_releasegate.py
-3ae66ea309fcbceb809de21b5062a3b0eba5e192c69fbc02592accb05d3f400a  .github/buildcheck/tests/test_sharedfiles.py
+5cece4a0c48e006de32b6ad8c3c675ac349150c2503a0e21b475564eb1a57267  .github/buildcheck/tests/test_sharedfiles.py
 7fe208dd33184b4543328f97b339c95e23c408b120e6bfa6095de4182aeb9a19  .github/check-release-gate.py
 1604ccdea83998814a3c1f98f746272222039867b0c7d692355e61495c1c648b  .github/check-shared-files.py
 e5f1679dc7151b2676b2f587860bbaa17e1b89b44a5a4e9703eb3499248c4a06  .github/buildcheck/versions.py