$ git clone -n https://gitee.com/src-opencloudos-rpms/tigervnc.git /var/lib/mock/dist-oc8-build-100157-63043/root/chroot_tmpdir/scmroot/tigervnc
Cloning into '/var/lib/mock/dist-oc8-build-100157-63043/root/chroot_tmpdir/scmroot/tigervnc'...
$ git fetch origin 2ce995592a1fc49fcefe7284a89b07113c4362c4:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tigervnc
 * [new ref]         2ce995592a1fc49fcefe7284a89b07113c4362c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ce9955 import tigervnc-1.13.1-12.tl3