How to fix fatal: --unshallow on a complete repository does not make sense in Git

# Check if .git/shallow file exists
if [ -f .git/shallow ]; then
  git fetch --unshallow
else
  echo "Repository is not shallow, skipping unshallow"
fi

# Git returns true if shallow, false otherwise
if git rev-parse --is-shallow-repository | grep -q "true"; then
  git fetch --unshallow
fi

- uses: actions/checkout@v4
  with:
    fetch-depth: 0  # Full clone, no need to unshallow

- uses: actions/checkout@v4
  with:
    fetch-depth: 1  # Shallow clone

- name: Fetch full history if needed
  run: |
    if git rev-parse --is-shallow-repository | grep -q "true"; then
      git fetch --prune --unshallow
    fi

variables:
  GIT_DEPTH: 0  # Full clone

script:
  # No unshallow needed
  - git log --oneline

variables:
  GIT_DEPTH: 10  # Shallow clone

script:
  - |
    if [ -f .git/shallow ]; then
      git fetch --unshallow origin
    fi
  - git log --oneline

# Fetch additional commits (works on any repo)
git fetch --depth=100

# Or deepen by N commits from current shallow point
git fetch --deepen=50

# Attempt unshallow but don't fail the script
git fetch --unshallow 2>/dev/null || true

# Or with more informative output
git fetch --unshallow || echo "Repository already has full history"

#!/bin/bash
set -e

fetch_full_history() {
  if git rev-parse --is-shallow-repository 2>/dev/null | grep -q "true"; then
    echo "Fetching full history..."
    git fetch --prune --unshallow
  else
    echo "Repository already has full history"
  fi
}

fetch_full_history

# Check if shallow
git rev-parse --is-shallow-repository

# View shallow boundaries (if any)
cat .git/shallow 2>/dev/null || echo "Not a shallow clone"

# Count available commits
git rev-list --count HEAD

# Check clone configuration
git config --get remote.origin.fetch