$ git clone -n https://gitee.com/src-opencloudos-rpms/crash.git /var/lib/mock/dist-oc9-build-40881-14591/root/chroot_tmpdir/scmroot/crash
Cloning into '/var/lib/mock/dist-oc9-build-40881-14591/root/chroot_tmpdir/scmroot/crash'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/crash
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c45c650 import crash-8.0.2-3.tl4