$ git clone -n https://git.cclinux.org/stage/rpms/opencl-headers.git /var/lib/mock/dist-circle8-build-21362-3888/root/chroot_tmpdir/scmroot/opencl-headers
Cloning into '/var/lib/mock/dist-circle8-build-21362-3888/root/chroot_tmpdir/scmroot/opencl-headers'...
$ git reset --hard 20d174a2448f423c380ebc84f38e74117cefa2ae
HEAD is now at 20d174a import opencl-headers-2.2-1.20180306gite986688.el8