$ git clone -n https://gitee.com/wenyuzifang/rrdtool.git /var/lib/mock/dist-an23-build-481713-74252/root/chroot_tmpdir/scmroot/rrdtool
Cloning into '/var/lib/mock/dist-an23-build-481713-74252/root/chroot_tmpdir/scmroot/rrdtool'...
$ git fetch origin 573821955bbaa894d606f0b29b77c3ab34d3fad4:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/rrdtool
 * [new ref]         573821955bbaa894d606f0b29b77c3ab34d3fad4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5738219 Update code from upstream