$ git clone -n https://gitee.com/opencloudos-stream/perl-Test-MockTime-HiRes.git /var/lib/mock/dist-oc9-epol-build-94262-59547/root/chroot_tmpdir/scmroot/perl-Test-MockTime-HiRes
Cloning into '/var/lib/mock/dist-oc9-epol-build-94262-59547/root/chroot_tmpdir/scmroot/perl-Test-MockTime-HiRes'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-Test-MockTime-HiRes
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac943b6 update