diff --git a/.forgejo/workflows/build-rpms.yml b/.forgejo/workflows/build-rpms.yml
index 5e91d9c..1570b89 100644
--- a/.forgejo/workflows/build-rpms.yml
+++ b/.forgejo/workflows/build-rpms.yml
@@ -70,8 +70,9 @@ jobs:
           enabled=1
           """
           MOCKEOF
+          cp /tmp/mock-custom.cfg /etc/mock/custom.cfg
           mock \
-            -r /tmp/mock-custom.cfg \
+            --root custom \
             --resultdir "${HOME}/mock-results" \
             --rebuild "${{ env.SRPM_PATH }}"