$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Unix-Syslog.git /var/lib/mock/dist-oc9-build-51026-14595/root/chroot_tmpdir/scmroot/perl-Unix-Syslog
Cloning into '/var/lib/mock/dist-oc9-build-51026-14595/root/chroot_tmpdir/scmroot/perl-Unix-Syslog'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Unix-Syslog
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b131a8 import perl-Unix-Syslog-1.1-3.tl4