$ git clone -n https://gitee.com/wenyuzifang/rrdtool.git /var/lib/mock/dist-an23-build-486712-74383/root/chroot_tmpdir/scmroot/rrdtool
Cloning into '/var/lib/mock/dist-an23-build-486712-74383/root/chroot_tmpdir/scmroot/rrdtool'...
$ git fetch origin 78b00f0e1da1d565754699914b10714fa2377d8f:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/rrdtool
 * [new ref]         78b00f0e1da1d565754699914b10714fa2377d8f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 78b00f0 Update code from upstream