$ git clone -n https://gitee.com/wenyuzifang/flex.git /var/lib/mock/dist-an23-build-462304-73799/root/chroot_tmpdir/scmroot/flex
Cloning into '/var/lib/mock/dist-an23-build-462304-73799/root/chroot_tmpdir/scmroot/flex'...
$ git fetch origin 73d594714cea0156619f41f0a414f2fd995a22bf:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/flex
 * [new ref]         73d594714cea0156619f41f0a414f2fd995a22bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73d5947 Update code from upstream