$ git clone -n https://gitee.com/zhuzhustu/screen.git /var/lib/mock/dist-an23-build-525589-78383/root/chroot_tmpdir/scmroot/screen
Cloning into '/var/lib/mock/dist-an23-build-525589-78383/root/chroot_tmpdir/scmroot/screen'...
$ git fetch origin 75f6d68d4112b88579fc21190399ecca62626837:KOJI_FETCH_HEAD
From https://gitee.com/zhuzhustu/screen
 * [new ref]         75f6d68d4112b88579fc21190399ecca62626837 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75f6d68 update screen.spec.