$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-JSON-PP.git /var/lib/mock/dist-oc9-build-71223-47534/root/chroot_tmpdir/scmroot/perl-JSON-PP
Cloning into '/var/lib/mock/dist-oc9-build-71223-47534/root/chroot_tmpdir/scmroot/perl-JSON-PP'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-JSON-PP
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6766ca6 import perl-JSON-PP-4.16-2.tl4