$ git clone -n https://gitee.com/wenyuzifang/tcl.git /var/lib/mock/dist-an23-build-470327-74061/root/chroot_tmpdir/scmroot/tcl
Cloning into '/var/lib/mock/dist-an23-build-470327-74061/root/chroot_tmpdir/scmroot/tcl'...
$ git fetch origin 3569fa81b9f438f424c2b2d58fedf54402d85f7d:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tcl
 * [new ref]         3569fa81b9f438f424c2b2d58fedf54402d85f7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3569fa8 Update code from upstream