$ git clone -n https://gitee.com/zhuzhustu/screen.git /var/lib/mock/dist-an23-build-524911-77908/root/chroot_tmpdir/scmroot/screen
Cloning into '/var/lib/mock/dist-an23-build-524911-77908/root/chroot_tmpdir/scmroot/screen'...
$ git fetch origin 023a24b0ccf35be4954da25178b57bbda57eeb6b:KOJI_FETCH_HEAD
From https://gitee.com/zhuzhustu/screen
 * [new ref]         023a24b0ccf35be4954da25178b57bbda57eeb6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 023a24b update screen.spec.