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Reuse remote repository sources by j178 · Pull Request #2315 · j178/prek · GitHub

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Reuse remote repository sources - #2315

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Reuse remote repository sources#2315
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j178 commented Jul 10, 2026

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Summary

  • cache remote repositories in shared bare sources
  • derive reusable commit checkouts for clone, update, and try-repo
  • reuse deterministic dirty try-repo environments

Closes #1743
Closes #1309

j178 added the enhancement New feature or request label Jul 10, 2026 — with ChatGPT Codex Connector

codecov Bot commented Jul 10, 2026 •
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Codecov Report

❌ Patch coverage is 22.31920% with 623 lines in your changes missing coverage. Please review.
✅ Project coverage is 37.03%. Comparing base (bb8e1d9) to head (7e2ec72).
⚠️ Report is 3 commits behind head on master.

Files with missing lines Patch % Lines
crates/prek/src/git.rs 22.41% 481 Missing ⚠️
crates/prek/src/cli/update/repository.rs 0.00% 45 Missing ⚠️
crates/prek/src/cli/try_repo.rs 0.00% 38 Missing ⚠️
crates/prek/src/cli/update/source.rs 0.00% 27 Missing ⚠️
crates/prek/src/cli/cache_gc.rs 0.00% 23 Missing ⚠️
crates/prek/src/cli/update/mod.rs 0.00% 9 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (bb8e1d9) and HEAD (7e2ec72). Click for more details.

HEAD has 2 uploads less than BASE
Flag BASE (bb8e1d9) HEAD (7e2ec72)
15 13
Additional details and impacted files 
@@             Coverage Diff             @@
##           master    #2315       +/-   ##
===========================================
- Coverage   93.30%   37.03%   -56.27%     
===========================================
  Files         128      128               
  Lines       28392    29017      +625     
===========================================
- Hits        26491    10747    -15744     
- Misses       1901    18270    +16369

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prek-ci-bot Bot commented Jul 10, 2026 •
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📦 Cargo Bloat Comparison

Binary size change: +0.72% (27.7 MiB → 27.9 MiB)

Expand for cargo-bloat output

Head Branch Results

 File  .text     Size             Crate Name
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_encrypt_avx512
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_decrypt_avx512
 0.4%   0.8% 103.1KiB              prek <prek::config::Language>::run::{closure#0}::{closure#0}
 0.3%   0.7%  98.8KiB              prek <prek::config::Language>::run::{closure#0}::{closure#0}
 0.3%   0.7%  94.7KiB              prek <prek::config::Language>::install::{closure#0}
 0.2%   0.5%  66.0KiB              prek <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.4%  49.4KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.4%  48.9KiB              prek prek::run::{closure#0}
 0.2%   0.4%  48.2KiB              prek <<prek::config::Config as serde_core::de::Deserialize>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map::<<serde_saphyr::de::deserializer::YamlDeserializer as serde_core::de::Deserializer>::deserialize_map::MA>
 0.1%   0.3%  41.7KiB              prek prek::cli::run::run::run::{closure#0}
 0.1%   0.3%  35.7KiB               std core::ptr::drop_glue::<<prek::config::Language>::install::{closure#0}>
 0.1%   0.2%  32.4KiB              prek prek::archive::unpack::<fs_err::tokio::file::File, &std::path::PathBuf>::{closure#0}
 0.1%   0.2%  31.5KiB              prek <prek::cli::RunOptions as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  29.8KiB              prek <prek::store::Store>::clone_repo_to_temp::{closure#0}
 0.1%   0.2%  29.3KiB     granit_parser <granit_parser::scanner::Scanner<granit_parser::input::str::StrInput>>::fetch_more_tokens
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.6KiB              prek <<prek::config::RemoteHook as serde_core::de::Deserialize>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map::<<serde_saphyr::de::deserializer::YamlDeserializer as serde_core::de::Deserializer>::deserialize_map::MA>
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble
 0.1%   0.2%  24.9KiB               xml <xml::reader::parser::PullParser>::dispatch_token
 0.1%   0.2%  24.5KiB              prek <<prek::config::LocalHook as serde_core::de::Deserialize>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map::<<serde_saphyr::de::deserializer::YamlDeserializer as serde_core::de::Deserializer>::deserialize_map::MA>
40.6%  86.1%  11.3MiB                   And 24642 smaller methods. Use -n N to show more.
47.2% 100.0%  13.2MiB                   .text section size, the file size is 27.9MiB

Base Branch Results

 File  .text     Size             Crate Name
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_encrypt_avx512
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_decrypt_avx512
 0.3%   0.7%  98.8KiB              prek <prek::config::Language>::run::{closure#0}::{closure#0}
 0.3%   0.7%  98.8KiB              prek <prek::config::Language>::run::{closure#0}::{closure#0}
 0.3%   0.7%  94.7KiB              prek <prek::config::Language>::install::{closure#0}
 0.2%   0.5%  66.0KiB              prek <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.4%  49.4KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.4%  48.6KiB              prek <<prek::config::Config as serde_core::de::Deserialize>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map::<<serde_saphyr::de::deserializer::YamlDeserializer as serde_core::de::Deserializer>::deserialize_map::MA>
 0.2%   0.4%  48.1KiB              prek prek::run::{closure#0}
 0.1%   0.3%  42.1KiB              prek prek::cli::run::run::run::{closure#0}
 0.1%   0.3%  35.7KiB               std core::ptr::drop_glue::<<prek::config::Language>::install::{closure#0}>
 0.1%   0.2%  32.4KiB              prek prek::archive::unpack::<fs_err::tokio::file::File, &std::path::PathBuf>::{closure#0}
 0.1%   0.2%  31.5KiB              prek <prek::cli::RunOptions as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  29.3KiB     granit_parser <granit_parser::scanner::Scanner<granit_parser::input::str::StrInput>>::fetch_more_tokens
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.6KiB              prek <<prek::config::RemoteHook as serde_core::de::Deserialize>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map::<<serde_saphyr::de::deserializer::YamlDeserializer as serde_core::de::Deserializer>::deserialize_map::MA>
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble
 0.1%   0.2%  25.5KiB              prek prek::cli::try_repo::try_repo::{closure#0}
 0.1%   0.2%  24.9KiB               xml <xml::reader::parser::PullParser>::dispatch_token
 0.1%   0.2%  24.5KiB              prek <<prek::config::LocalHook as serde_core::de::Deserialize>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map::<<serde_saphyr::de::deserializer::YamlDeserializer as serde_core::de::Deserializer>::deserialize_map::MA>
40.4%  86.0%  11.2MiB                   And 24576 smaller methods. Use -n N to show more.
47.0% 100.0%  13.0MiB                   .text section size, the file size is 27.7MiB

prek-ci-bot Bot commented Jul 10, 2026 •
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⚡️ Hyperfine Benchmarks

Summary: 0 regressions, 0 improvements above the 10% threshold.

Environment
  • OS: Linux 6.17.0-1018-azure
  • CPU: 4 cores
  • prek version: prek 0.4.9+11 (c2d4b48 2026-07-12)
  • Rust version: rustc 1.97.0 (2d8144b78 2026-07-07)
  • Hyperfine version: hyperfine 1.20.0
CLI Commands

Benchmarking basic commands in the main repo:

prek --version

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base --version 2.2 ± 0.1 2.0 2.8 1.01 ± 0.08
prek-head --version 2.1 ± 0.1 2.0 3.1 1.00

prek list

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base list 9.3 ± 0.3 8.9 11.5 1.00
prek-head list 9.7 ± 0.2 9.1 10.2 1.05 ± 0.04

prek validate-config .pre-commit-config.yaml

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base validate-config .pre-commit-config.yaml 3.1 ± 0.0 3.0 3.2 1.00
prek-head validate-config .pre-commit-config.yaml 3.2 ± 0.1 3.0 3.5 1.01 ± 0.03

prek sample-config

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base sample-config 2.4 ± 0.0 2.3 2.6 1.00
prek-head sample-config 2.5 ± 0.0 2.4 2.5 1.01 ± 0.02
Cold vs Warm Runs

Comparing first run (cold) vs subsequent runs (warm cache):

prek run --all-files (cold - no cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --all-files 78.2 ± 2.0 73.8 80.9 1.01 ± 0.03
prek-head run --all-files 77.4 ± 1.1 75.7 79.4 1.00

prek run --all-files (warm - with cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --all-files 76.5 ± 2.1 73.4 80.3 1.00
prek-head run --all-files 77.0 ± 2.2 72.0 79.7 1.01 ± 0.04
Full Hook Suite

Running the builtin hook suite on the benchmark workspace:

prek run --all-files (full builtin hook suite)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --all-files 78.6 ± 2.6 74.5 85.4 1.00
prek-head run --all-files 79.4 ± 3.3 73.5 93.5 1.01 ± 0.05
Individual Hook Performance

Benchmarking each hook individually on the test repo:

prek run trailing-whitespace --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run trailing-whitespace --all-files 20.3 ± 0.6 19.5 21.9 1.00
prek-head run trailing-whitespace --all-files 20.6 ± 0.5 19.7 21.7 1.01 ± 0.04

prek run end-of-file-fixer --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run end-of-file-fixer --all-files 26.7 ± 2.0 24.3 30.2 1.02 ± 0.11
prek-head run end-of-file-fixer --all-files 26.2 ± 2.2 23.6 30.5 1.00

prek run check-json --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-json --all-files 7.6 ± 0.3 7.1 8.2 1.00
prek-head run check-json --all-files 7.6 ± 0.2 7.1 8.0 1.00 ± 0.05

prek run check-yaml --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-yaml --all-files 7.4 ± 0.1 7.2 7.6 1.00
prek-head run check-yaml --all-files 7.5 ± 0.1 7.2 7.7 1.01 ± 0.02

prek run check-toml --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-toml --all-files 7.6 ± 0.3 7.2 8.4 1.00 ± 0.05
prek-head run check-toml --all-files 7.6 ± 0.3 7.1 8.0 1.00

prek run check-xml --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-xml --all-files 7.4 ± 0.4 7.1 8.6 1.00
prek-head run check-xml --all-files 7.5 ± 0.3 7.1 8.4 1.01 ± 0.07

prek run detect-private-key --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run detect-private-key --all-files 13.5 ± 1.0 11.8 16.3 1.00
prek-head run detect-private-key --all-files 14.2 ± 1.2 12.1 16.7 1.05 ± 0.12

prek run fix-byte-order-marker --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run fix-byte-order-marker --all-files 18.1 ± 0.8 17.1 20.6 1.00
prek-head run fix-byte-order-marker --all-files 18.4 ± 0.7 17.5 19.9 1.02 ± 0.06
Installation Performance

Benchmarking hook installation (fast path hooks skip Python setup):

prek install-hooks (cold - no cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base install-hooks 4.4 ± 0.1 4.4 4.5 1.00
prek-head install-hooks 4.5 ± 0.0 4.4 4.5 1.01 ± 0.02

prek install-hooks (warm - with cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base install-hooks 4.4 ± 0.0 4.4 4.4 1.00
prek-head install-hooks 4.4 ± 0.0 4.4 4.5 1.01 ± 0.01
File Filtering/Scoping Performance

Testing different file selection modes:

prek run (staged files only)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run 37.0 ± 0.9 35.7 39.8 1.00
prek-head run 37.9 ± 2.4 36.1 45.1 1.03 ± 0.07

prek run --files '*.json' (specific file type)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --files '*.json' 7.9 ± 0.1 7.7 8.1 1.01 ± 0.02
prek-head run --files '*.json' 7.8 ± 0.1 7.7 8.0 1.00
Workspace Discovery & Initialization

Benchmarking hook discovery and initialization overhead:

prek run --dry-run --all-files (measures init overhead)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --dry-run --all-files 6.7 ± 0.1 6.5 6.8 1.01 ± 0.02
prek-head run --dry-run --all-files 6.6 ± 0.1 6.5 6.9 1.00
Meta Hooks Performance

Benchmarking meta hooks separately:

prek run check-hooks-apply --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-hooks-apply --all-files 12.4 ± 1.3 11.2 15.1 1.08 ± 0.12
prek-head run check-hooks-apply --all-files 11.4 ± 0.2 11.2 11.9 1.00

prek run check-useless-excludes --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-useless-excludes --all-files 11.5 ± 0.3 11.2 12.4 1.06 ± 0.05
prek-head run check-useless-excludes --all-files 10.8 ± 0.4 10.3 11.4 1.00

prek run identity --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run identity --all-files 9.7 ± 0.1 9.6 10.0 1.00
prek-head run identity --all-files 9.9 ± 0.5 9.7 11.4 1.02 ± 0.05

j178 mentioned this pull request Aug 6, 2026
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try-repo doesn't utilize already existing environment Suggestion for faster "clones"

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