$ git clone -n https://gitee.com/wenyuzifang/trousers_1757636851.git /var/lib/mock/dist-an23-build-468660-74027/root/chroot_tmpdir/scmroot/trousers_1757636851
Cloning into '/var/lib/mock/dist-an23-build-468660-74027/root/chroot_tmpdir/scmroot/trousers_1757636851'...
$ git fetch origin cbb8f105fecd43a7ff6ab39daf0c8258cb7529d2:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/trousers_1757636851
 * [new ref]         cbb8f105fecd43a7ff6ab39daf0c8258cb7529d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbb8f10 Update code from upstream