$ git clone -n https://src.fedoraproject.org/rpms/libXvMC.git /var/lib/mock/f31-build-87022-31725/root/chroot_tmpdir/scmroot/libXvMC
Cloning into '/var/lib/mock/f31-build-87022-31725/root/chroot_tmpdir/scmroot/libXvMC'...
$ git reset --hard 7854ed550400ac7e539c95477d39e34bd0e51b2b
HEAD is now at 7854ed5 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild