WIP: prepare for docker/podman based tests

Author: RonnyPfannschmidt

.git_archival.txt

@@ -1,4 +1,4 @@
 node: $Format:%H$
 node-date: $Format:%cI$
-describe-name: $Format:%(describe:tags)$
+describe-name: $Format:%(describe)$
 ref-names: $Format:%D$

testing/Dockerfile.rawhide-git

@@ -4,4 +4,4 @@ RUN git --version
 USER  1000:1000
 VOLUME /repo
 WORKDIR /repo
-ENTRYPOINT git archive HEAD -o archival.tar.gz
+ENTRYPOINT mkdir git-archived && git archive HEAD -o git-archived/archival.tar.gz