$ git clone -n https://gitee.com/src-opencloudos-rpms/tigervnc.git /var/lib/mock/dist-oc8-build-256431-84591/root/chroot_tmpdir/scmroot/tigervnc
Cloning into '/var/lib/mock/dist-oc8-build-256431-84591/root/chroot_tmpdir/scmroot/tigervnc'...
$ git fetch origin 8e737d3271cb78f31cf43e2bdafb21afe426a8b9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tigervnc
 * [new ref]         8e737d3271cb78f31cf43e2bdafb21afe426a8b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e737d3 import tigervnc-1.15.0-11.tl3