$ git clone -n https://gitee.com/src-opencloudos-rpms/kexec-tools.git /var/lib/mock/dist-oc9-build-180513-80107/root/chroot_tmpdir/scmroot/kexec-tools
Cloning into '/var/lib/mock/dist-oc9-build-180513-80107/root/chroot_tmpdir/scmroot/kexec-tools'...
$ git fetch origin ae97bf280ebbd6b474ffd8a7b68faaddad09773f:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/kexec-tools
 * [new ref]         ae97bf280ebbd6b474ffd8a7b68faaddad09773f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae97bf2 import kexec-tools-2.0.26-15.tl4