$ git clone -n https://gitee.com/errata/tigervnc.git /var/lib/mock/dist-an7_9-updates-build-387655-71962/root/chroot_tmpdir/scmroot/tigervnc
Cloning into '/var/lib/mock/dist-an7_9-updates-build-387655-71962/root/chroot_tmpdir/scmroot/tigervnc'...
$ git reset --hard origin/a7
HEAD is now at f9afbc2 fix build error