$ git clone -n https://gitee.com/wency_cn/python-jinja2_1770975600.git /var/lib/mock/dist-an23-build-514547-75110/root/chroot_tmpdir/scmroot/python-jinja2_1770975600
Cloning into '/var/lib/mock/dist-an23-build-514547-75110/root/chroot_tmpdir/scmroot/python-jinja2_1770975600'...
$ git fetch origin a4650a66892b850ff1964d17accc0bc27f7c1d35:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/python-jinja2_1770975600
 * [new ref]         a4650a66892b850ff1964d17accc0bc27f7c1d35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a4650a6 Update code from upstream