Worked on the apache/incubator-devlake repository to address a data integrity issue in the GitHub GraphQL collector by implementing a scoped cleanup mechanism for stale issue rows. The solution involved propagating the repository identifier and enforcing the use of source RawDataOrigin parameters, ensuring that deletions were limited to the relevant repository and preventing accidental cross-repo data loss. All changes were confined to the existing collector path without requiring schema modifications. The work leveraged Go for backend and API development, with a focus on robust data management practices. Unit tests and local builds were used to validate the effectiveness of the fix.