This is a [issue from
TortoiseGit](https://code.google.com/p/tortoisegit/issues/detail?id=2233).
After doing some test, I report it here.
The following is the testing information I have tested.
### Folder Structure
```
Test
|-- myrepo
| |-- bar.txt
| |-- foo.txt
|
|-- myrepo.git
|-- .git
```
Testing repository is
[here](https://code.google.com/p/tortoisegit/issues/detail?id=2233#c2).
### Using different worktree
Set the config file (in the .git folder)
```
[core]
worktree = ../../myrepo
```
### Test 1 - Git Bash
```
User@PC /d/Repo/myrepo.git (master)
$ git --version
git version 1.9.4.msysgit.0
User@PC /d/Repo/myrepo.git (master)
$ git update-index --refresh
fatal: Unable to write new index file
```
D:\Repo\myrepo.git\\**index.lock** is not deleted.
### Test 2 - Git 2.0.0
Copy testing repository into ```C:\msysgit\MyTest```
Execute```msys.bat```
```$ vagrant up```
```$ vagrant ssh```
```vagrant@precise64:/vagrant/git$ cd /vagrant```
```vagrant@precise64:/vagrant$ cd mytest/myrepo.git```
```
vagrant@precise64:/vagrant/mytest/myrepo.git$ git --version
git version 2.0.0
```
```
vagrant@precise64:/vagrant/mytest/myrepo.git$ git update-index --refresh
fatal: Unable to write new index file
```
Also, **index.lock is not deleted.**
### Test 3 - gitdll of TortoiseGit
(git version 1.9.0)
Tracing the source code into **compat/mingw.c**
line 289 : xutftowcs_canonical_path() get the value of var. wpathname
```
D:\Repo\myrepo\.git\index.lock
```
It should be
```
D:\Repo\myrepo.git\.git\index.lock
```
line 294 : _wunlink() try to delete the
file.(```D:\Repo\myrepo\.git\index.lock```)
line 295 : GetLastError() return 3(ERROR_PATH_NOT_FOUND)
(Actually, there is no ```D:\Repo\myrepo\.git``` folder.)
--
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