End-of-line comments are prompted with "is not a valid attribute name"

[D无数 <wushuripple@xxxxxxxxx>]

> macos 13.5.2
> git version 2.37.0 (Apple Git-136)

I use end-of-line comments in my .gitattributes file, and it is often
(not always present, but often) prompted with '# is not a valid
attribute name: .gitattributes:1' when performing many operations.

This is my .gitattributes:
```
res/csv/*.txt eol=lf # 保证csv为lf，以匹配解析格式

# Custom for Visual Studio
*.cs     diff=csharp
```

When performing certain operations:
···shell
> git status
# is not a valid attribute name: .gitattributes:1
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean
···

Other repositories that have .gitattributes files and include
end-of-line comments do the same thing. I'm sure there are no special
characters in my files.