## Description Approximately 1-2% of infrastructure-related pipeline failures show "fatal: fetch-pack: invalid index-pack output" errors, which are related to Git's internal pack protocol used during repository fetching operations. ## Affected Jobs Below are some examples of JobID and its respective Correlation ID | Job ID | correlation ID | | ------ | ------ | | [Job #10060313822](https://gitlab.com/gitlab-org/gitlab/-/jobs/10060313822) | a1ac33bd1894f99c167caa6bd14fa336 | | [Job #10062999782](https://gitlab.com/gitlab-org/gitlab/-/jobs/10062999782) | a696275c5402fde1b6a46bc786012dae | ## Error logs ``` Cloning into 'gitlab-foss'... error: 26634 bytes of body are still expected fetch-pack: unexpected disconnect while reading sideband packet fatal: early EOF fatal: fetch-pack: invalid index-pack output ``` ## Preliminary Analysis This error typically occurs when there's corruption or interruption during Git's pack file transfer process. The "index-pack" process verifies and unpacks data received during git fetch operations. So Failures can be caused by: Network interruptions or packet loss during large repository transfers. ## Next Steps - Engage with git domain experts/teams - Consider implementing automatic retries with exponential backoff for these error types