$ git clone -n https://gitee.com/src-opencloudos-rpms/tigervnc.git /var/lib/mock/dist-oc8-build-242655-83012/root/chroot_tmpdir/scmroot/tigervnc
Cloning into '/var/lib/mock/dist-oc8-build-242655-83012/root/chroot_tmpdir/scmroot/tigervnc'...
$ git fetch origin b80fb86e3b1c89f98f208faf5ac233c762ee3504:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tigervnc
 * [new ref]         b80fb86e3b1c89f98f208faf5ac233c762ee3504 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b80fb86 import tigervnc-1.15.0-10.tl3