Dolt push / clone with depth params takes up an excessive amount of RAM

## Issue
DB file size: 195GB
Dolt version: 2.1.7
We use `dolt push` to remote repository by `files://`. It crashed many times, each one we add some memory until memory up to 128GB.
When we clone from the same repository with depth 1, we found 128GB memory of the server which execute `dolt clone` was not enough, and crashed when clone at 30minutes after we execute command. It work successfully on the second time, and used 98% of the memory

Start by reproducing the reported `dolt push` to a `files://` remote and `dolt clone` with depth 1 using the stated 195GB repository and Dolt 2.1.7. Measure memory during both commands and compare the successful and failed clone runs; done means the operations complete without excessive memory growth.

Written by the indexing model from the issue text.