$ git clone -n https://src.fedoraproject.org/rpms/platform.git /var/lib/mock/f31-build-48948-27211/root/chroot_tmpdir/scmroot/platform
Cloning into '/var/lib/mock/f31-build-48948-27211/root/chroot_tmpdir/scmroot/platform'...
$ git reset --hard e142035159dd465be4409b841d7c2180128725d1
HEAD is now at e142035 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild