$ git clone -n https://gitee.com/renbo02/snowball.git /var/lib/mock/dist-an23-build-441911-73171/root/chroot_tmpdir/scmroot/snowball
Cloning into '/var/lib/mock/dist-an23-build-441911-73171/root/chroot_tmpdir/scmroot/snowball'...
$ git fetch origin 404cbdb3309925d7724fe6dc0ca7738873b1c450:KOJI_FETCH_HEAD
From https://gitee.com/renbo02/snowball
 * [new ref]         404cbdb3309925d7724fe6dc0ca7738873b1c450 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 404cbdb Use upstream tar