$ git clone -n https://src.fedoraproject.org/rpms/fastback.git /var/lib/mock/f31-build-49793-27346/root/chroot_tmpdir/scmroot/fastback
Cloning into '/var/lib/mock/f31-build-49793-27346/root/chroot_tmpdir/scmroot/fastback'...
$ git reset --hard 2b81afa3d82618b09061e30fbfdedd900b2e043b
HEAD is now at 2b81afa - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild