$ git clone -n https://src.fedoraproject.org/rpms/kernel-headers.git /var/lib/mock/f40-build-767072-124584/root/chroot_tmpdir/scmroot/kernel-headers
Cloning into '/var/lib/mock/f40-build-767072-124584/root/chroot_tmpdir/scmroot/kernel-headers'...
$ git fetch origin f9f43c280c64974743d13184e5cc5e6caeb9c988:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kernel-headers
 * [new ref]         f9f43c280c64974743d13184e5cc5e6caeb9c988 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9f43c2 Linux v6.7-rc7