diff --git a/swh/lister/nixguix/lister.py b/swh/lister/nixguix/lister.py
--- a/swh/lister/nixguix/lister.py
+++ b/swh/lister/nixguix/lister.py
@@ -28,6 +28,7 @@
 
 from swh.core.github.utils import GitHubSession
 from swh.core.tarball import MIMETYPE_TO_ARCHIVE_FORMAT
+from swh.core.utils import grouper
 from swh.lister import TARBALL_EXTENSIONS
 from swh.lister.pattern import CredentialsType, StatelessLister
 from swh.scheduler.model import ListedOrigin
@@ -367,4 +368,7 @@
         """Given an artifact tuple (type, artifact), yield a ListedOrigin."""
         artifact_type, artifact = artifact_tuple
         mapping_type_fn = getattr(self, f"{artifact_type.value}_to_listed_origin")
-        yield from mapping_type_fn(artifact)
+
+        # randomize a bit origins to not hit one server at the same time
+        for batch_origins in grouper(mapping_type_fn(artifact), n=5000):
+            yield from batch_origins