Creation of a branch named that has a directory prefix equal to the name of another branch fail.

[Tommaso Ercole <Tommaso.Ercole@qlik.com>]

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As per compiled bug report, creation of a branch that has a prefix that map to a folder, when that prefix is just an existing branch in the repo fails.

I.E. 'a/b/c' when 'a/b' just exists.

Best regards,
Tommaso Ercole 
Head Programmer
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Creating a branch a/b/c when a/b exists fails complaining that a ref 'a/b' just exists.

This is probably due to the fact that when creating a/b a directory 'a' is created inside 
'refs/heads' and a file 'b' is created under the a directory, avoiding the subsequent possibility 
to create a folder 'b' in the same directory that is needed to create the ref for 'a/b/c'

The solution seems to append to the file an extension to disambiguate the file from the folder.

[System Info]
git version:
git version 2.27.0.windows.1
cpu: x86_64
built from commit: 907ab1011dce9112700498e034b974ba60f8b407
sizeof-long: 4
sizeof-size_t: 8
uname: Windows 10.0 18363 
compiler info: gnuc: 10.1
libc info: no libc information available


[Enabled Hooks]