Running git on a Windows XP machine, using bash. I exported my project from SVN, and then cloned a bare repository.
I then pasted the export into the bare repositori
I don't know much about git on Windows, but...
Appears to me that git is converting the return format to match that of the running platform (Windows). CRLF is the default return format in Windows, while LF is the default return format for most other OSes.
Chances are, the return format will be adjusted properly when the code is moved to another system. I also reckon git is smart enough to keep binary files intact rather than trying to convert LFs to CRLFs in, say, JPEGs.
In summary, you probably don't need to fret too much over this conversion. However, if you go to archive your project as a tarball, fellow coders would probably appreciate having LF line terminators rather than CRLF. Depending on how much you care (and depending on you not using Notepad), you might want to set git to use LF returns if you can :)
Appendix: CR is ASCII code 13, LF is ASCII code 10. Thus, CRLF is two bytes, while LF is one.