diff --git a/backend/scripts/p3-acceptance.mjs b/backend/scripts/p3-acceptance.mjs
index 768066d3..6fb738ac 100644
--- a/backend/scripts/p3-acceptance.mjs
+++ b/backend/scripts/p3-acceptance.mjs
@@ -714,6 +714,10 @@ async function initializeGitAndRegistry(ctx) {
 
 async function mutateWorkspaceDescriptor(ctx, workspaceId, mutator, commitMessage) {
   const author = join(ctx.run.root, "author");
+  // The registry may have produced docs-only follow-up commits on the remote; the curator
+  // always rebases onto the latest remote head before committing so the push stays fast-forward.
+  await git(ctx, ["fetch", "origin", "main"], { cwd: author });
+  await git(ctx, ["reset", "--hard", "origin/main"], { cwd: author });
   const workspace = structuredClone(ctx.workspaceObjects[workspaceId === "p2-dwh" ? "dwh" : "filesystem"]);
   mutator(workspace);
   ctx.workspaceObjects[workspaceId === "p2-dwh" ? "dwh" : "filesystem"] = workspace;