changelog: document recent git loader speed improvements

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Migrated from D8835 (view on Phabricator)

Build is green

Patch application report for D8835 (id=31846)

Rebasing onto ce3cd5dc...

Current branch diff-target is up to date.

Changes applied before test

commit 7c84a0c203f20f630a676bf6c47e847a5aae3bb2
Author: Stefano Zacchiroli <zack@upsilon.cc>
Date:   Mon Nov 14 12:27:07 2022 +0100

    changelog: document recent git loader speed improvements

See https://jenkins.softwareheritage.org/job/DDOC/job/build-on-diff/256/ for more details.

Thanks!

Merge request was accepted

approved this merge request

merged in abbcf03b

Merge request was merged

closed