$ git clone -n https://src.fedoraproject.org/rpms/jbuilder.git /var/lib/mock/f31-build-55389-28123/root/chroot_tmpdir/scmroot/jbuilder
Cloning into '/var/lib/mock/f31-build-55389-28123/root/chroot_tmpdir/scmroot/jbuilder'...
$ git reset --hard 82d57ef0887b90d490f59ad7a1d403d2cb901db4
HEAD is now at 82d57ef - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild