$ git clone -n https://gitee.com/wency_cn/gcab.git /var/lib/mock/dist-an23-build-502390-74802/root/chroot_tmpdir/scmroot/gcab
Cloning into '/var/lib/mock/dist-an23-build-502390-74802/root/chroot_tmpdir/scmroot/gcab'...
$ git fetch origin 12048f515fe3a368518f520cd16c8505acff057d:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/gcab
 * [new ref]         12048f515fe3a368518f520cd16c8505acff057d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12048f5 Update code from upstream