$ git clone -n https://src.fedoraproject.org/rpms/shaderc.git /var/lib/mock/f31-build-89380-32082/root/chroot_tmpdir/scmroot/shaderc
Cloning into '/var/lib/mock/f31-build-89380-32082/root/chroot_tmpdir/scmroot/shaderc'...
$ git reset --hard 64f3b94f91e9e3bfb38a4d84c68f21cacab7a0a5
HEAD is now at 64f3b94 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild