10.5 "Git Internals - The Refspec" misleading about what "refspecs" are

[Chealer]

There's no existing/similar bug report.

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This report is about a single actionable bug.

• I'm reporting a single actionable bug

This report is about the ProGit book, version 2, English language.

• This bug is not about a translation or old version

Bug covers book website/pdf

• I confirm the bug is about the book as found on the website/pdf

Problem is present in the Pro Git book on the website?

• This bug also affects the Pro Git book as published on the website.

Which version of the book is affected?

Source files

Describe the bug:

Section 10.5 Git Internals - The Refspec of the book can be misleading/confusing about "refspecs". I did not know/remember anything about refspecs last week, but visibly, the title itself has a couple issues:

1. The section itself has several mentions of "multiple refspecs" as well as the "default refspec", so the title should visibly read "Refspecs", not "The Refspec".
2. A look at git pull --help suffices to see several leaks (more than 5 references to refspecs as of Git 2.47). If refspecs were meant to be an internal, they are clearly far from having reached that status.

Of course, defining refspecs would help.

Steps to reproduce:

This does not report a behavioral bug.

Expected behavior:

This does not report a behavioral bug.

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