$ git clone -n https://src.fedoraproject.org/rpms/igt-gpu-tools.git /var/lib/mock/f31-build-115453-34500/root/chroot_tmpdir/scmroot/igt-gpu-tools
Cloning into '/var/lib/mock/f31-build-115453-34500/root/chroot_tmpdir/scmroot/igt-gpu-tools'...
$ git reset --hard b9c406eb847f6b97b247eca8df83d7eceb749117
HEAD is now at b9c406e New git snapshot: 3fb0f227d8856008f89a797879e27094745ce97e