$ git clone -n https://gitee.com/wency_cn/libdecor.git /var/lib/mock/dist-an23-build-502260-74802/root/chroot_tmpdir/scmroot/libdecor
Cloning into '/var/lib/mock/dist-an23-build-502260-74802/root/chroot_tmpdir/scmroot/libdecor'...
$ git fetch origin 266169a2f3ec54f7a355362af644fb5a4d8e1740:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/libdecor
 * [new ref]         266169a2f3ec54f7a355362af644fb5a4d8e1740 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 266169a Update code from upstream