copilot plugin marketplace browse awesome-copilot - warning: templates not found

```
$ copilot --version
GitHub Copilot CLI 1.0.48.

$ copilot plugin marketplace list
✨ Included with GitHub Copilot:
◆ copilot-plugins (GitHub: github/copilot-plugins)
◆ awesome-copilot (GitHub: github/awesome-copilot)

$ copilot plugin marketplace browse awesome-copilot
Failed to browse marketplace: Failed to fetch GitHub marketplace github/awesome-copilot: Error: Command failed: git clone --depth 1 --progress https://github.com/github/awesome-copilot.git ...

Cloning into '/home/kenorb/snap/copilot-cli/39/.cache/copilot/marketplaces/github-awesome-copilot'...
warning: templates not found in /usr/share/git-core/templates
git: 'remote-https' is not a git command. See 'git --help'.

$ which copilot
/snap/bin/copilot
```

What I'm doing wrong?
Is it because copilot was installed from snap store?

在檢查 `copilot --version` 和可用的 Git 指令後，使用透過 snap 安裝的 `/snap/bin/copilot` 執行 `copilot plugin marketplace browse awesome-copilot`，重現此失敗。調查回報中缺少的 `git remote-https` 和範本路徑，然後確認 marketplace 瀏覽是否能在沒有警告或複製錯誤的情況下完成。

由索引模型根據 Issue 內容生成。