Re:Introducing Git protocol version 2
by nkkollaw on Friday May 18, 2018 @08:03PM
(#17105851)
They could skip a version like PHP did. Among other reasons, since books and articles about PHP 6 had already been written long before PHP 5+1 came out, they went with 7.
The result is the main RPM everyone uses will probably stay at version 4.x forever.
[0]: http://rpm5.org/
[1]: https://en.wikipedia.org/wiki/Rpm_(software)#RPM_v5