$ git clone -n https://src.fedoraproject.org/rpms/libvpx.git /var/lib/mock/f31-build-59712-28624/root/chroot_tmpdir/scmroot/libvpx
Cloning into '/var/lib/mock/f31-build-59712-28624/root/chroot_tmpdir/scmroot/libvpx'...
$ git reset --hard 4700db506f4a8d785ad4fb501180b20f4dd48b95
HEAD is now at 4700db5 Avoid setting optflags twice