$ git clone -n https://gitee.com/wenyuzifang/ruby.git /var/lib/mock/dist-an23-build-444495-73188/root/chroot_tmpdir/scmroot/ruby
Cloning into '/var/lib/mock/dist-an23-build-444495-73188/root/chroot_tmpdir/scmroot/ruby'...
$ git fetch origin 6ff5a1be316ee2672e2d5d398b68d5eccd73e200:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/ruby
 * [new ref]         6ff5a1be316ee2672e2d5d398b68d5eccd73e200 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ff5a1b Update code from upstream