diff --git a/.forgejo/workflows/build-rpms.yml b/.forgejo/workflows/build-rpms.yml
index 2e20db4..d95b93d 100644
--- a/.forgejo/workflows/build-rpms.yml
+++ b/.forgejo/workflows/build-rpms.yml
@@ -50,7 +50,7 @@ jobs:
 
       - name: Build RPM with mock
         run: |
-          cat > /tmp/mock-custom.cfg <<'MOCKEOF'
+          cat > /etc/mock/custom.cfg <<'MOCKEOF'
           include('/etc/mock/alma+epel-10-x86_64.cfg')
           config_opts['root'] = 'custom'
           config_opts['yum.conf'] += """
@@ -71,13 +71,11 @@ jobs:
           enabled=1
           """
           MOCKEOF
-          cp /tmp/mock-custom.cfg /etc/mock/custom.cfg
-          mock --root custom --scrub=chroot || true
-          mock \
-            --root custom \
-            --resultdir "${HOME}/mock-results" \
-            --clean \
-            --rebuild "${{ env.SRPM_PATH }}"
+
+          mock --root custom --scrub=all || true
+          mock --root custom --init
+          mock --root custom --chroot 'groupadd -g 135 mock 2>/dev/null || true; useradd -u 135 -g 135 -d /builddir -s /bin/bash mockbuild 2>/dev/null || true'
+          mock --root custom --resultdir "${HOME}/mock-results" --no-clean --rebuild "${{ env.SRPM_PATH }}"
 
       - name: Upload RPMs to Forgejo Package Registry
         run: |