1GIT-PACK-REFS(1) Git Manual GIT-PACK-REFS(1)
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6 git-pack-refs - Pack heads and tags for efficient repository access
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9 git pack-refs [--all] [--no-prune]
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13 Traditionally, tips of branches and tags (collectively known as refs)
14 were stored one file per ref in a (sub)directory under $GIT_DIR/refs
15 directory. While many branch tips tend to be updated often, most tags
16 and some branch tips are never updated. When a repository has hundreds
17 or thousands of tags, this one-file-per-ref format both wastes storage
18 and hurts performance.
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20 This command is used to solve the storage and performance problem by
21 storing the refs in a single file, $GIT_DIR/packed-refs. When a ref is
22 missing from the traditional $GIT_DIR/refs directory hierarchy, it is
23 looked up in this file and used if found.
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25 Subsequent updates to branches always create new files under
26 $GIT_DIR/refs directory hierarchy.
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28 A recommended practice to deal with a repository with too many refs is
29 to pack its refs with --all --prune once, and occasionally run git
30 pack-refs --prune. Tags are by definition stationary and are not
31 expected to change. Branch heads will be packed with the initial
32 pack-refs --all, but only the currently active branch heads will become
33 unpacked, and the next pack-refs (without --all) will leave them
34 unpacked.
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37 --all
38 The command by default packs all tags and refs that are already
39 packed, and leaves other refs alone. This is because branches are
40 expected to be actively developed and packing their tips does not
41 help performance. This option causes branch tips to be packed as
42 well. Useful for a repository with many branches of historical
43 interests.
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45 --no-prune
46 The command usually removes loose refs under $GIT_DIR/refs
47 hierarchy after packing them. This option tells it not to.
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50 Older documentation written before the packed-refs mechanism was
51 introduced may still say things like ".git/refs/heads/<branch> file
52 exists" when it means "branch <branch> exists".
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55 Part of the git(1) suite
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59Git 1.8.3.1 11/19/2018 GIT-PACK-REFS(1)