$ git clone -n https://src.fedoraproject.org/rpms/libvpx.git /var/lib/mock/f31-build-95154-32530/root/chroot_tmpdir/scmroot/libvpx
Cloning into '/var/lib/mock/f31-build-95154-32530/root/chroot_tmpdir/scmroot/libvpx'...
$ git reset --hard 43c0c1d85df28e01cf50fe959da07852355bb046
HEAD is now at 43c0c1d 1.8.1