$ git clone -n https://gitee.com/wenyuzifang/mtr.git /var/lib/mock/dist-an23-build-482778-74272/root/chroot_tmpdir/scmroot/mtr
Cloning into '/var/lib/mock/dist-an23-build-482778-74272/root/chroot_tmpdir/scmroot/mtr'...
$ git fetch origin 5defb39a951e679a43aa233be564274e5d7c2e6b:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/mtr
 * [new ref]         5defb39a951e679a43aa233be564274e5d7c2e6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5defb39 Update code from upstream