Properly set target branch

.coveralls.yml

@@ -1,4 +1,4 @@
-service_name: drone-io
+service_name: gh-actions
 gcov_options: \-lp
 include:
   - include

.github/workflows/build_and_test.yml

@@ -66,10 +66,11 @@ jobs:
       # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
       run: ctest --output-on-failure -C ${{env.BUILD_TYPE}}
 
-    - name: coveralls
+    - name: Coverage Report
       if: matrix.os == 'ubuntu-latest'
       run: |
-        export TRAVIS_BRANCH=$GITHUB_REF_NAME && \
+        CI_BRANCH=${GITHUB_BASE_REF:-${GITHUB_REF#refs/heads/}}
+          echo "CI_BRANCH=CI_BRANCH" >> $GITHUB_ENV && \
         export TRAVIS_JOB_ID=$GITHUB_RUN_NUMBER && \
         git clone https://github.com/CrowCpp/cpp-coveralls.git && \
         cd cpp-coveralls && \