$ git clone -n https://gitee.com/wenyuzifang/tuna.git /var/lib/mock/dist-an23-build-464366-73881/root/chroot_tmpdir/scmroot/tuna
Cloning into '/var/lib/mock/dist-an23-build-464366-73881/root/chroot_tmpdir/scmroot/tuna'...
$ git fetch origin ca7aa916cb5fd62d23bfda1e326d939c0e33c574:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tuna
 * [new ref]         ca7aa916cb5fd62d23bfda1e326d939c0e33c574 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca7aa91 Update code from upstream