$ git clone -n https://src.fedoraproject.org/rpms/libvpx.git /var/lib/mock/f40-build-738888-108198/root/chroot_tmpdir/scmroot/libvpx
Cloning into '/var/lib/mock/f40-build-738888-108198/root/chroot_tmpdir/scmroot/libvpx'...
$ git reset --hard 4f48750b46a90b1ee6d9621c0e3ddb13936c1af2
HEAD is now at 4f48750 1.13.1