[skip-ci] Packit: do not merge PR in CI

Packit's default behaviour of merging commits on PR copr build jobs ends
up creating a HEAD commit ID that doesn't exist upstream. This commit
disables that behaviour.

This way, copr builds from release PR can be used for podman-machine-os
builds.

Co-authored-by: Matej Focko <mfocko@users.noreply.github.com>
Signed-off-by: Lokesh Mandvekar <lsm5@fedoraproject.org>

.packit.yaml

@@ -15,6 +15,9 @@ packages:
   podman-eln:
     specfile_path: rpm/podman.spec
 
+# Disable automatic merging for Copr builds (and subsequent Testing Farm)
+merge_pr_in_ci: false
+
 srpm_build_deps:
   - git-archive-all
   - make