Update CLUEstering.spec

Author: smuzaffar

CLUEstering.spec

@@ -1,12 +1,12 @@
 ### RPM external CLUEstering 2.5.0
 ## NOCOMPILER
 
-Source: https://github.com/cms-patatrack/%{n}/archive/%{realversion}.tar.gz
+Source: https://github.com/cms-patatrack/%{n}/archive/refs/tags/%{realversion}.tar.gz
 Requires: alpaka
 Requires: boost
 
 %prep
-%setup -n %{n}-%{git_commit}
+%setup -n %{n}-%{realversion}
 
 %build