handle multiple commits

.gitea/workflows/update-child-repos.yaml

@@ -25,7 +25,7 @@ jobs:
           git config --global user.email "${GIT_EMAIL}"
           git config --global credential.helper store
           echo "https://${GIT_EMAIL//@/%40}:${GIT_TOKEN}@git.bjphoster.com" > ~/.git-credentials
-          ./update_child_repos.sh
+          ./update_child_repos.sh "${{ github.event.before }}"
         env:
           GIT_NAME: ${{ secrets.GIT_NAME }}
           GIT_EMAIL: ${{ secrets.GIT_EMAIL }}

update_child_repos.sh

@@ -14,7 +14,11 @@ TEMPLATE_BRANCH="main"
 CURRENT_COMMIT_ID=$(git rev-parse HEAD)
 COMMIT_MESSAGE="Template updates (commit: ${CURRENT_COMMIT_ID:0:7})"
 
-PREVIOUS_COMMIT_ID=$(git log --format="%H" -n 2 HEAD | tail -n 1)
+PREVIOUS_COMMIT_ID="${1:-}"
+
+if [ -z "${PREVIOUS_COMMIT_ID}" ]; then
+  PREVIOUS_COMMIT_ID=$(git log --format="%H" -n 2 HEAD | tail -n 1)
+fi
 
 if [ "${PREVIOUS_COMMIT_ID}" = "${CURRENT_COMMIT_ID}" ]; then
   FILES_CHANGED=""