need repohead

pkg/hold/pds/xrpc.go

@@ -303,7 +303,7 @@ func (h *XRPCHandler) HandleSyncGetRecord(w http.ResponseWriter, r *http.Request
 	path := fmt.Sprintf("%s/%s", collection, rkey)
 
 	// Get the record (this will log all accessed blocks in the MST path)
-	recordCID, _, err := tempRepo.GetRecordBytes(r.Context(), path)
+	_, _, err = tempRepo.GetRecordBytes(r.Context(), path)
 	if err != nil {
 		http.Error(w, fmt.Sprintf("failed to get record: %v", err), http.StatusNotFound)
 		return
@@ -312,21 +312,16 @@ func (h *XRPCHandler) HandleSyncGetRecord(w http.ResponseWriter, r *http.Request
 	// Get all blocks that were accessed during record retrieval
 	blocks := loggingBS.GetLoggedBlocks()
 
-	// Log block count for debugging
-	fmt.Printf("sync.getRecord: Retrieved %d blocks for record at %s/%s\n", len(blocks), collection, rkey)
-	for i, blk := range blocks {
-		fmt.Printf("  Block %d: CID=%s, size=%d bytes\n", i+1, blk.Cid().String(), len(blk.RawData()))
-	}
-
 	// Write CAR file with all accessed blocks
 	w.Header().Set("Content-Type", "application/vnd.ipld.car")
 
 	// Create a buffer to write the CAR data
 	var buf bytes.Buffer
 
-	// Create CAR header with the record CID as root
+	// Create CAR header with the repo head as root (not the record CID)
+	// The CAR file represents a slice of the repo from head to record
 	header := &car.CarHeader{
-		Roots:   []cid.Cid{recordCID},
+		Roots:   []cid.Cid{repoHead},
 		Version: 1,
 	}