Fleet command multi clone

### Describe the feature or problem you'd like to solve

In order to not squash file changes, clone repo to multiple directories and have git as the communication mechanism

### Proposed solution

Allow /fleet to clone the repository multiple times and rely on git functions to handle file conflicts and file squash incidents.

### Example prompts or workflows

_No response_

### Additional context

_No response_

首先追蹤 /fleet 命令及其現有的儲存庫複製工作流程。確定多個複製目錄和基於 git 的通訊應如何融入目前的行為；當 /fleet 能夠管理多個複製項目，同時不會 squash 檔案變更或讓衝突變得模糊不清時，這項工作就完成了。

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