$ git clone -n https://gitee.com/src-opencloudos-rpms/crash-trace-command.git /var/lib/mock/dist-oc9-build-120634-71390/root/chroot_tmpdir/scmroot/crash-trace-command
Cloning into '/var/lib/mock/dist-oc9-build-120634-71390/root/chroot_tmpdir/scmroot/crash-trace-command'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/crash-trace-command
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dadec81 import crash-trace-command-3.0-7.tl4