ci: declare git repository a safe directory

Since version 2.35.2, due to CVE-2022-24765, git refuses to operate by
default on a repository owned by a different user.

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Acked-by: Petr Lautrbach <plautrba@redhat.com>

scripts/ci/fedora-test-runner.sh

@@ -70,6 +70,7 @@ dnf install -y \
 cd "$SELINUX_DIR"
 
 # Show HEAD commit for sanity checking
+git config --global --add safe.directory "$SELINUX_DIR"
 git log --oneline -1
 
 #