Add pack-refs steps

[sluongng]

Problem

For a large repository, and given some particular workflow, there are many refs(branches / tags) that user will have to deal with.

Too many unpacked-refs will lead to slowness in git for-each-ref, which is often used in developers' shell completions script. This, in turn, led to a sluggish User Experience when user want to checkout a branch/tag.

Proposal

Implement pack-refs steps in the background where git pack-refs --all is called routinely. This would help clean up loose refs, save the inodes and speed up for-each-ref call overall.

[shalupov]

For me it speeds up fetch too

[github-actions]

Labeling this issue as stale. There has been no activity for 30 days. Remove stale label or comment or this issue will be closed in 7 days.

[github-actions]

Labeling this issue as stale. There has been no activity for 30 days. Remove stale label or comment or this issue will be closed in 7 days.

[derrickstolee]

@sluongng @shalupov: Thank you for creating and commenting here. I'm finally getting around to putting this into core Git instead of Scalar. See gitgitgadget/git#871 for more details. Thanks!

[github-actions]

Labeling this issue as stale. There has been no activity for 30 days. Remove stale label or comment or this issue will be closed in 7 days.

[derrickstolee]

Hah. This is in Git 2.31.1, so is enabled by default when using Git's background maintenance. Closing.