$ git clone -n https://src.fedoraproject.org/rpms/platform.git /var/lib/mock/f31-build-88194-31956/root/chroot_tmpdir/scmroot/platform
Cloning into '/var/lib/mock/f31-build-88194-31956/root/chroot_tmpdir/scmroot/platform'...
$ git reset --hard db5fbc0d1b36c358c16f947eae9d6ebbd8cf86ee
HEAD is now at db5fbc0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild