[gtk/clang-format-improvement] Try to fix the git usage in ci

[Matthias Clasen <matthiasc src gnome org>]

commit 34365812a816fc0c6128ef396694b03457c0225a
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Sep 9 18:59:10 2022 -0400

    Try to fix the git usage in ci
    
    Thanks, git.

 .gitlab-ci/run-style-check-diff.sh | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci/run-style-check-diff.sh b/.gitlab-ci/run-style-check-diff.sh
index a69fd77308..8acc973856 100755
--- a/.gitlab-ci/run-style-check-diff.sh
+++ b/.gitlab-ci/run-style-check-diff.sh
@@ -2,6 +2,8 @@
 
 set -e
 
+git config --global --add safe.directory "$PWD"
+
 # We need to add a new remote for the upstream main, since this script could
 # be running in a personal fork of the repository which has out of date branches.
 if [ "${CI_PROJECT_NAMESPACE}" != "GNOME" ]; then