USAGE:
  sediment report merge-retention [-h] [--org ORG] [--json] [--rows-out FILE]
                                  [--database-url DATABASE_URL]
                                  [--mirror-path MIRROR_PATH]

  Measure attributed file changes at pull request merge boundaries.

OPTIONS:
  -h, --help            show this help message and exit
  --org ORG             org id (default: $SEDIMENT_ORG_ID)
  --json                emit JSON instead of a text report
  --rows-out FILE       write canonical merge-retention rows to FILE as JSONL
  --database-url DATABASE_URL
                        PostgreSQL URL (default: $SEDIMENT_DATABASE_URL)
  --mirror-path MIRROR_PATH
                        base dir for git mirrors (default: $SEDIMENT_MIRROR_PATH
                        or './mirrors')
