## ADDED Requirements

### Requirement: Git clone uses SSH credentials
The system SHALL clone repositories using SSH keys.

#### Scenario: Clone repository
- **WHEN** the system clones a repository
- **THEN** it writes the SSH private key to a temporary file
- **AND** sets GIT_SSH_COMMAND to use the key
- **AND** executes git clone
- **AND** cleans up the temporary key file

#### Scenario: Clone fails with invalid key
- **WHEN** a clone operation fails due to authentication
- **THEN** the system returns a clear error message
- **AND** suggests checking deploy key permissions

### Requirement: Git fetch and push use credentials
The system SHALL support fetch and push operations with SSH credentials.

#### Scenario: Fetch updates
- **WHEN** the system fetches from a remote
- **THEN** it uses the stored SSH key for authentication
- **AND** returns the fetch result

#### Scenario: Push changes
- **WHEN** the system pushes to a remote
- **THEN** it uses the stored SSH key for authentication
- **AND** returns the push result