$ git clone -n https://git.cclinux.org/stage/rpms/gtk-vnc.git /var/lib/mock/dist-circle9-build-120653-85318/root/chroot_tmpdir/scmroot/gtk-vnc
Cloning into '/var/lib/mock/dist-circle9-build-120653-85318/root/chroot_tmpdir/scmroot/gtk-vnc'...
$ git fetch origin a8e6f76fdb83bdf6ef40a9ceabe4cd5f7d3cde01:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/gtk-vnc
 * [new ref]         a8e6f76fdb83bdf6ef40a9ceabe4cd5f7d3cde01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8e6f76 import gtk-vnc-1.3.0-2.el9