$ git clone -n https://src.fedoraproject.org/rpms/kernel-headers.git /var/lib/mock/f42-build-864468-172334/root/chroot_tmpdir/scmroot/kernel-headers
Cloning into '/var/lib/mock/f42-build-864468-172334/root/chroot_tmpdir/scmroot/kernel-headers'...
$ git fetch origin aed545f3b5534380a534ed50c703fb04290a89cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kernel-headers
 * [new ref]         aed545f3b5534380a534ed50c703fb04290a89cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aed545f Linux v6.13-rc4