diff --git a/swh/web/admin/origin_save.py b/swh/web/admin/origin_save.py
--- a/swh/web/admin/origin_save.py
+++ b/swh/web/admin/origin_save.py
@@ -3,6 +3,8 @@
 # License: GNU Affero General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
+import json
+
 from django.conf import settings
 from django.contrib.admin.views.decorators import staff_member_required
 from django.core.exceptions import ObjectDoesNotExist
@@ -188,7 +190,9 @@
     sor = SaveOriginRequest.objects.get(
         visit_type=visit_type, origin_url=origin_url, status=SAVE_REQUEST_PENDING
     )
+
     sor.status = SAVE_REQUEST_REJECTED
+    sor.note = json.loads(request.body).get("note")
     sor.save()
     return HttpResponse(status=200)
 
diff --git a/swh/web/tests/admin/test_origin_save.py b/swh/web/tests/admin/test_origin_save.py
--- a/swh/web/tests/admin/test_origin_save.py
+++ b/swh/web/tests/admin/test_origin_save.py
@@ -161,6 +161,37 @@
 
     response = check_http_get_response(client, save_request_url, status_code=200)
     assert response.data[0]["save_request_status"] == SAVE_REQUEST_REJECTED
+    assert response.data[0]["note"] is None
+
+
+def test_reject_pending_save_request_with_note(client, staff_user, swh_scheduler):
+
+    visit_type = "git"
+    origin_url = "https://wikipedia.com"
+
+    save_request_url = reverse(
+        "api-1-save-origin",
+        url_args={"visit_type": visit_type, "origin_url": origin_url},
+    )
+
+    response = check_http_post_response(client, save_request_url, status_code=200)
+    assert response.data["save_request_status"] == SAVE_REQUEST_PENDING
+
+    reject_request_url = reverse(
+        "admin-origin-save-request-reject",
+        url_args={"visit_type": visit_type, "origin_url": origin_url},
+    )
+
+    data = {"note": "The URL does not target a git repository"}
+
+    client.force_login(staff_user)
+    response = check_http_post_response(
+        client, reject_request_url, status_code=200, data=data
+    )
+
+    response = check_http_get_response(client, save_request_url, status_code=200)
+    assert response.data[0]["save_request_status"] == SAVE_REQUEST_REJECTED
+    assert response.data[0]["note"] == data["note"]
 
 
 def test_remove_save_request(client, staff_user):