$ git clone -n https://gitee.com/opencloudos-stream/perl-Unix-Syslog.git /var/lib/mock/dist-ocs23-build-27706-1191/root/chroot_tmpdir/scmroot/perl-Unix-Syslog
Cloning into '/var/lib/mock/dist-ocs23-build-27706-1191/root/chroot_tmpdir/scmroot/perl-Unix-Syslog'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-Unix-Syslog
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac29290 OCS package init