go get github.com/trknhr/backlog-git-pr-diff-checker
It check specific paths defined by --target-paths. You move to your target repository's path. Then you run the command like this.
backlog-git-pr-diff-checker --apikey=xxxx --since="5 days ago" --target-paths="./css,./js" --description="The new pull requests are under the /src/css/"
-k, --apikey string Backlog's api key
-h, --help help for this command
-s, --since string Limit the commits to those made after the specified date.
-p, --target-paths strings Target paths you want to filter.