diff --git a/.packit.yaml b/.packit.yaml
index c326264..0f2bebf 100644
--- a/.packit.yaml
+++ b/.packit.yaml
@@ -231,6 +231,9 @@ jobs:
     packages: [specfile-epel8]
     dist_git_branches:
       - epel-8
+    actions:
+      post-upstream-clone: |
+        bash -c "sed -i \"s/^Source0:.*/Source0: %(cat \/etc\/os-release | od -A n -t x1 | tr -d ' \\\\\n')/\" epel8/python-specfile.spec"
   - <<: *pull_from_upstream
     packages: [specfile-epel10]
     dist_git_branches: