not sure this works ...

.github/workflows/build.yml

@@ -23,9 +23,9 @@ jobs:
         run: |
           # SPEC=$(firstword $(wildcard *.spec))
           # rpmdev-setuptree _build
-          spectool --get-files epics_launcher.spec
-          # rpmbuild --define '_topdir $(CURDIR)/_build' --define '_sourcedir $(CURDIR)' -bb $(SPEC)
-          rpmbuild -bb epics_launcher.spec
+          # spectool --get-files epics_launcher.spec
+          rpmbuild --define '_sourcedir $(pwd)' -bb epics_launcher.spec
+          # rpmbuild -bb epics_launcher.spec
 
       - name: Publish RPM package
         run: |

epics_launcher.spec

@@ -6,7 +6,7 @@ Release:        1%{?dist}
 Summary:        Standard PSI launcher application
 License:        Open Source
 URL:            https://gitea.psi.ch/ctrl_packages/epics_launcher
-Source0:        https://gitea.psi.ch/ctrl_packages/epics_launcher/archive/v%{version}.tar.gz
+# Source0:        https://gitea.psi.ch/ctrl_packages/epics_launcher/archive/v%{version}.tar.gz
 # PAtch0: 	setup.py.patch
 
 BuildRequires:  python3-setuptools