$ git clone -n https://src.fedoraproject.org/rpms/mesa-libGLw.git /var/lib/mock/f31-build-86776-31706/root/chroot_tmpdir/scmroot/mesa-libGLw
Cloning into '/var/lib/mock/f31-build-86776-31706/root/chroot_tmpdir/scmroot/mesa-libGLw'...
$ git reset --hard c4a0caae58f22ebee1d1b6e1e35bfe3ab8ef9b54
HEAD is now at c4a0caa - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild