# Full repository check
wit fsck

# Check specific aspects
wit fsck --connectivity-only
wit fsck --dangling
wit fsck --unreachable

# Verbose output
wit fsck --verbose

$ wit fsck

Checking repository integrity...

Objects: 1,234 checked
  Blobs: 500
  Trees: 400
  Commits: 300
  Tags: 34

References: 46 checked
  Branches: 12
  Tags: 34

✓ No issues found

$ wit fsck

Checking repository integrity...

Objects: 1,234 checked

Issues found:
  ✗ Missing object: abc123def456 (referenced by commit xyz789)
  ✗ Corrupted object: 789xyz012abc (bad header)
  ! Dangling commit: 456def789abc (unreachable)

Summary:
  Errors: 2
  Warnings: 1

Run 'wit fsck --repair' to attempt automatic fixes

# Fast connectivity check
wit fsck --connectivity-only

# Find unreachable commits (possibly from rebase/reset)
wit fsck --dangling

Dangling commits:
  abc123 - "WIP: feature work" (2 days ago)
  def456 - "Temp commit" (5 days ago)

# These can be recovered with:
wit checkout abc123
# Or added to lost-found:
wit fsck --lost-found

$ wit fsck --verbose

Checking objects...
  [1/1234] Checking blob abc123...
  [2/1234] Checking blob def456...
  ...
  [1234/1234] Checking commit xyz789...

Checking references...
  Checking refs/heads/main...
  Checking refs/heads/feature...
  ...

All checks passed!

# Stricter validation (catches more edge cases)
wit fsck --strict

# Find dangling commits
wit fsck --dangling

# Recovery options:
# 1. Checkout directly
wit checkout <commit-hash>

# 2. Create a branch
wit branch recovered <commit-hash>

# 3. Cherry-pick
wit cherry-pick <commit-hash>

# Write dangling objects to lost-found
wit fsck --lost-found

# Check lost-found directory
ls .wit/lost-found/

# Objects are named by their hash
# Recover by type:
wit cat-file -t <hash>  # Check type
wit cat-file -p <hash>  # Print content

# Backup first
cp -r .wit .wit.backup

# Attempt repair
wit fsck --repair

# Check for corruption after unexpected shutdown
wit fsck --full

# Verify after disk issues
wit fsck --strict

# Regular health check
wit fsck

# Verify before major operations
wit fsck && wit push --all