message: [gha] check breaking tag for all commits in PR
  Closes:
  Approved by: andll
diff: @@ -18,6 +18,7 @@ jobs:
  - name: Setup env
  run: |
  echo "::set-env name=LIBRA_GIT_REV::$(git rev-parse --short=8 HEAD)"
  + echo "::set-env name=MASTER_GIT_REV::$(git rev-parse --short=8 origin/master)"
  echo "::set-env name=TEST_TAG::land_$(git rev-parse --short=8 HEAD)"
  echo "::set-env name=PREV_TAG::land_$(git rev-parse --short=8 origin/master)"
  - name: Check kill switch
  @@ -54,7 +55,7 @@ jobs:
  if: steps.check_ks.outputs.should_run == 'true'
  run: |
  set +e
  - commit_message=$(git log -1 --pretty=oneline)
  + commit_message=$(git log --pretty=oneline $MASTER_GIT_REV..$LIBRA_GIT_REV)
  echo $commit_message | grep '\[breaking\]'
  if ${{ secrets.KILL_SWITCH_LAND_BLOCKING_COMPAT }}; then
  echo "Compat killswitch activated! Will run land_blocking suite"
  