Summary

When a virtual GitHub repository is opened via the GitHub Repositories extension
(or on github.dev / vscode.dev), switching to the Worktrees view displays the
following misleading welcome message:

⚠ Worktrees are not supported by your version of Git. Please upgrade to a more
recent version.

The message is incorrect: Git version is not the issue. Worktrees are simply not
applicable to virtual repositories, which have no local filesystem or Git binary.

Steps to Reproduce

1. Install the GitHub Repositories extension (github.remotehub)
2. Open Command Palette → GitHub Repositories: Open Repository on GitHub…
3. Enter any repository (e.g. gitkraken/vscode-gitlens)
4. In the GitLens sidebar, open the Worktrees view (or switch to it in the
   grouped SCM view)

Expected: no message, or a message explaining that Worktrees are not available
for virtual repositories
Actual: "⚠ Worktrees are not supported by your version of Git. Please upgrade
to a more recent version."

Environment

• GitLens version: 2026.3.1805
• VS Code version:
  1.112.0 (user setup)
  Commit: 07ff9d6178ede9a1bd12ad3399074d726ebe6e43
  Date: 2026-03-17T18:09:23Z
  Electron: 39.8.0
  ElectronBuildId: 13470701
  Chromium: 142.0.7444.265
  Node.js: 22.22.0
  V8: 14.2.231.22-electron.0
  OS: Windows_NT x64 10.0.26200
• GitHub Repositories extension: installed and active
• Repository type: virtual (opened via github.remotehub / vscode-vfs:// URI)

Impact

The message is confusing for users who have a modern Git installation and open a
virtual repository — it implies their local Git is outdated when the actual reason
is unrelated to Git version.