ci: Correctly checkout repository

.gitlab-ci.yml

@@ -205,7 +205,7 @@ Check Packages:on-schedule:
           chmod 777 /tmp/package_versions.txt' && \
       
         # Checkout our branch
-        git --git-dir /tmp/$CI_PROJECT_PATH.git checkout -f master && \
+        git checkout -f $CI_DEFAULT_BRANCH && \
       
         wait && \
       
@@ -242,7 +242,7 @@ Check Packages:on-schedule:
         if [ "${OLD_CHECKSUM}" != "${NEW_CHECKSUM}" ]; then
         
           # Checkout our branch
-          git --git-dir /tmp/$CI_PROJECT_PATH.git checkout -f master && \
+          git checkout -f $CI_DEFAULT_BRANCH && \
         
           # Copy the new package versions list to repository
           mv -f package_versions_new.txt package_versions.txt && \