$ git clone -n https://gitee.com/src-opencloudos-rpms/tigervnc.git /var/lib/mock/dist-oc8-build-239615-82610/root/chroot_tmpdir/scmroot/tigervnc
Cloning into '/var/lib/mock/dist-oc8-build-239615-82610/root/chroot_tmpdir/scmroot/tigervnc'...
$ git fetch origin 6efb9fa366ccf4ea56327aae41bdddbba6920c7d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tigervnc
 * [new ref]         6efb9fa366ccf4ea56327aae41bdddbba6920c7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6efb9fa import tigervnc-1.15.0-9.tl3