$ git clone -n https://gitee.com/xiang-zao/kexec-tools_3.git /var/lib/mock/dist-an23-build-498173-74662/root/chroot_tmpdir/scmroot/kexec-tools_3
Cloning into '/var/lib/mock/dist-an23-build-498173-74662/root/chroot_tmpdir/scmroot/kexec-tools_3'...
$ git fetch origin ff5b30305c72cfd0aec517b507455d64bab533ee:KOJI_FETCH_HEAD
From https://gitee.com/xiang-zao/kexec-tools_3
 * [new ref]         ff5b30305c72cfd0aec517b507455d64bab533ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff5b303 set nr_cpus=2 to avoid irq insufficiency