From 065669140ac44df1cef6d57caa1cd014fda553cd Mon Sep 17 00:00:00 2001
From: Rishav Mishra <rishav.mishra@wmich.edu>
Date: Fri, 17 Jul 2026 09:57:37 -0400
Subject: [PATCH 1/2] Use sc_MPI_Sendrecv in vector handler

---
 cmake/thirdparty.json             | 2 +-
 src/t8_data/t8_vector_handler.hxx | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/cmake/thirdparty.json b/cmake/thirdparty.json
index f3e51f1df7..3357f4a456 100644
--- a/cmake/thirdparty.json
+++ b/cmake/thirdparty.json
@@ -16,7 +16,7 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/cburstedde/libsc.git",
-                "ref": "f8c5099bd5ad553c1bf6e34dc7b6c290f3cc3cca",
+                "ref": "359f5fe542b7877fc7a71b59a77e5abf0df793d5",
                 "shallow": "TRUE"
             }
         },
diff --git a/src/t8_data/t8_vector_handler.hxx b/src/t8_data/t8_vector_handler.hxx
index 5d7b96bec2..6f51f111d0 100644
--- a/src/t8_data/t8_vector_handler.hxx
+++ b/src/t8_data/t8_vector_handler.hxx
@@ -339,8 +339,8 @@ struct t8_vector_handler: public t8_abstract_vector_handler
       /* Compute sizes of outgoing and incoming messages */
       const int send_num_bytes = buffer_size (comm);
       int recv_num_bytes = 0;
-      int mpiret = MPI_Sendrecv (&send_num_bytes, 1, sc_MPI_INT, dest, tag, &recv_num_bytes, 1, sc_MPI_INT, source, tag,
-                                 comm, status);
+      int mpiret = sc_MPI_Sendrecv (&send_num_bytes, 1, sc_MPI_INT, dest, tag, &recv_num_bytes, 1, sc_MPI_INT, source,
+                                    tag, comm, status);
       SC_CHECK_MPI (mpiret);
 
       /* Prepare send buffer */
@@ -352,7 +352,7 @@ struct t8_vector_handler: public t8_abstract_vector_handler
       std::vector<char> recv_buffer (recv_num_bytes);
 
       /* Actual sendrecv of data */
-      mpiret = MPI_Sendrecv (
+      mpiret = sc_MPI_Sendrecv (
         /* send payload */
         send_buffer.data (), send_num_bytes, sc_MPI_PACKED, dest, tag,
         /* receive payload */

From 80702b198a828a00fdc8b86f7dbe1c20eb0afaef Mon Sep 17 00:00:00 2001
From: Rishav Mishra <rishav.mishra@wmich.edu>
Date: Fri, 17 Jul 2026 10:09:51 -0400
Subject: [PATCH 2/2] Disable shallow clone for pinned libsc commit

---
 cmake/thirdparty.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/thirdparty.json b/cmake/thirdparty.json
index 3357f4a456..b31ab5683c 100644
--- a/cmake/thirdparty.json
+++ b/cmake/thirdparty.json
@@ -17,7 +17,7 @@
                 "type": "git",
                 "url": "https://github.com/cburstedde/libsc.git",
                 "ref": "359f5fe542b7877fc7a71b59a77e5abf0df793d5",
-                "shallow": "TRUE"
+                "shallow": "FALSE"
             }
         },
         {