$ git clone -n https://gitee.com/src-opencloudos-rpms/kexec-tools.git /var/lib/mock/dist-oc9-build-58819-16463/root/chroot_tmpdir/scmroot/kexec-tools
Cloning into '/var/lib/mock/dist-oc9-build-58819-16463/root/chroot_tmpdir/scmroot/kexec-tools'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/kexec-tools
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d23cab7 import kexec-tools-2.0.26-2.tl4.1