Commit git with Ollama

prepare-commit-msg

#!/usr/bin/env sh
# Make this file executable: chmod +x .git/hooks/prepare-commit-msg

echo "Running prepare-commit-msg hook"
COMMIT_MSG_FILE="$1"

# Get the staged diff
DIFF=$(git diff --cached)

# Generate a summary with ollama CLI and gemma3 model
SUMMARY=$(
  ollama run gemma3 <<EOF
Generate a raw text commit message for the following diff.
Keep commit message concise and to the point.
Make the first line the title (100 characters max) and the rest the body:
$DIFF
EOF
)

if [ -f "$COMMIT_MSG_FILE" ]; then
  # Save the AI generated summary to the commit message file
  echo "$SUMMARY" >"$COMMIT_MSG_FILE"
  # Append existing message if it exists
  if [ -n "$EXISTING_MSG" ]; then
    echo "" >>"$COMMIT_MSG_FILE"
    echo "$EXISTING_MSG" >>"$COMMIT_MSG_FILE"
  fi
fi