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I would appreciate a little help please. I am building the kernel with the following commands:

Emailing kernel-owner doesn't work 99% of the time. It's better to email the Fedora kernel list for these kinds of questions (now CC'd).

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fedpkg clone -a kernel cd kernel git checkout -b f23 --track origin/f23 fedpkg local

and this builds a 4.2.8-300 release, however I need to build a 4.2.7-300 release which fedora is currently running on.

how would I alter my command to achieve this.

You need to look in koji for the specific build, and use the sha1sum hash that version was built from. You can do this by navigating the build webpages, or using the koji command line client. The client method is below:

[jwboyer@vader ~]$ koji buildinfo kernel-4.2.7-300.fc23 | head -n 5 BUILD: kernel-4.2.7-300.fc23 [704495] State: COMPLETE Built by: jforbes Volume: DEFAULT Task: 12130200 build (f23-candidate, /kernel:827b8d0864402142f735d3e8cef8d20ae094e2d7)

The hash is listed there ^^^^.

Then go to your checkout you've done with fedpkg and run:

git reset --hard 827b8d0864402142f735d3e8cef8d20ae094e2d7

The way I tend to do this is to create a branch at the point I want to move out from. So the above similar command would be:

git checkout -b <new branch name> <git hash>

So you could do:

git checkout -b f23-4.2.7 827b8d0864402142f735d3e8cef8d20ae094e2d7

Which puts you into a branch from that point, you can then commit your own patches etc.

"fedpkg switch-branch f23" to get back to main f23 branch "fedpkg --dist f23 srpm" to create a src.rpm of the branch with any changes you might have committed "git branch -D f23-4.2.7" to delete the branch you created