Seems that this is disabled by default.
Any +1s?
diff --git a/roles/bodhi2/backend/templates/pungi.rpm.conf.j2
b/roles/bodhi2/backend/templates/pungi.rpm.conf.j2
index 140f3438e..1c6dc02f2 100644
--- a/roles/bodhi2/backend/templates/pungi.rpm.conf.j2
+++ b/roles/bodhi2/backend/templates/pungi.rpm.conf.j2
@@ -55,6 +55,9 @@ repoclosure_backend = 'dnf'
# CREATEREPO
createrepo_c = True
createrepo_checksum = 'sha256'
+createrepo_deltas = [
+ ('^Everything$', {'*': True})
+]
# CHECKSUMS
media_checksums = ['sha256']