graph TD
   step1[fork a project from source repo to personal repo] --> step2[clone to local storage]
   step2 --> step3["add a remote url (source repo)"]
   step3 --> step4["create a feature branch from main/master branch & edit"]
   step4 --> step5[push feature branch to personal repo]
   step5 --> step6["create pull request(PR) to source repo"]
   step6 --> step7[wait merge by repo maintainer]
   step7 --> step8["sync repo between source and personal (pull from source,push to personal)"]