diff --git a/fixture.md b/fixture.md
index bb117c8..f9a9662 100644
--- a/fixture.md
+++ b/fixture.md
@@ -6,8 +6,10 @@ Arm A expected generated message-field trailer:
 - `Co-authored-by: be-coder-07 <be-coder-07@fleet.mosaicstack.dev>`
 
 Arm B branch-message trailer:
-- `Reviewed-by: be-coder-06 <be-coder-06@fleet.mosaicstack.dev>`
+- `Co-authored-by: be-coder-06 <be-coder-06@fleet.mosaicstack.dev>`
 
 Absence controls (must not appear in the landed squash object):
 - `Co-authored-by: absent-arm-a <absent-arm-a@example.invalid>`
-- `Reviewed-by: absent-arm-b <absent-arm-b@example.invalid>`
+- `Co-authored-by: absent-arm-b <absent-arm-b@example.invalid>`
+
+Foreign-authored branch change for linked-author generation.