message: ci: Fix check-changed
  check-changed was breaking when develop -> master PRs were open.
diff: @@ -27,6 +27,12 @@ else
  echoerr "$PR"
  REF=$(echo "$PR" | jq -r ".base.ref")
  + if [ "$REF" = "master" ]; then
  + echoerr "Base ref is master, requiring a total rebuild."
  + echo "TRUE"
  + exit 0
  + fi
  +
  echoerr "Base Ref: $REF"
  echoerr "Base Ref SHA: $(git show-branch --sha1-name "$REF")"
  echoerr "Curr Ref: $(git rev-parse --short HEAD)"
  