Doesn't work on bare repos with more than 59 local worktrees

[lu0]

Describe the bug

N/A (title)

To Reproduce

Steps to reproduce the behavior:

1. Let's assume we have 58 worktrees/branches
2. Ceate a new one, the 59th one, either using bare git or git-worktree-wrapper. Hook works, updates .airflowignore.
3. Create another one, the 60th one. The hook does not work, doesn't log if it updated .airflowignore and it actually doesn't update it.

Expected behavior

The hook must work (.airflowignore gets updated) with any number of existing worktrees.

Screenshots

Desktop (please complete the following information):

• OS: Linux Mint 20
• Git version: 2.25.1
• Git wrapper: git-worktree-wrapper
• Shell: Bash 5.0.16
• Airflow version: 2.2.5
• Repository version: v1.1.1

Additional context

N/A