CRLF eols start diffing right after cloning the repo

[leobalter]

I just cloned this repo and got diff from files with CRLF.

The same kind of issue happened to me in jquery/jquery-migrate#66.

[~/dev]
$ git clone https://github.com/jquery/jquery-wp-content.git
Cloning into 'jquery-wp-content'...
remote: Reusing existing pack: 9459, done.
remote: Total 9459 (delta 0), reused 0 (delta 0)
Receiving objects: 100% (9459/9459), 11.30 MiB | 210.00 KiB/s, done.
Resolving deltas: 100% (4438/4438), done.
Checking connectivity... done
[~/dev]
$ cd jquery-wp-content/
[~/dev/jquery-wp-content] (master)⚡
$ git st
# On branch master
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#   modified:   plugins/allow-numeric-stubs/allow-numeric-stubs.php
#   modified:   plugins/allow-numeric-stubs/readme.txt
#   modified:   themes/jquery/404.php
#   modified:   themes/jquery/archive.php
#   modified:   themes/jquery/author.php
#   modified:   themes/jquery/category.php
#   modified:   themes/jquery/content-single.php
#   modified:   themes/jquery/image.php
#   modified:   themes/jquery/index.php
#   modified:   themes/jquery/license.txt
#   modified:   themes/jquery/page.php
#   modified:   themes/jquery/readme.txt
#   modified:   themes/jquery/search.php
#   modified:   themes/jquery/sidebar-footer.php
#   modified:   themes/jquery/sidebar-page.php
#   modified:   themes/jquery/tag.php
#   modified:   themes/meetings.jquery.org/content-single.php
#   modified:   wp-config-sample.php
#
no changes added to commit (use "git add" and/or "git commit -a")
[~/dev/jquery-wp-content] (master)⚡
$ git diff
warning: CRLF will be replaced by LF in plugins/allow-numeric-stubs/allow-numeric-stubs.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in plugins/allow-numeric-stubs/readme.txt.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/404.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/archive.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/author.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/category.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/content-single.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/image.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/index.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/license.txt.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/page.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/readme.txt.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/search.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/sidebar-footer.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/sidebar-page.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/jquery/tag.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in themes/meetings.jquery.org/content-single.php.
The file will have its original line endings in your working directory.
warning: CRLF will be replaced by LF in wp-config-sample.php.
The file will have its original line endings in your working directory.