$ git clone -n https://gitee.com/zhuhong_bo/tigervnc /var/lib/mock/dist-an7-build-423122-72502/root/chroot_tmpdir/scmroot/tigervnc
Cloning into '/var/lib/mock/dist-an7-build-423122-72502/root/chroot_tmpdir/scmroot/tigervnc'...
$ git fetch origin a7:KOJI_FETCH_HEAD
From https://gitee.com/zhuhong_bo/tigervnc
 * [new branch]      a7         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f03523c Fix build against latest xorg-x11-server