this appears to be a windows-specific issue short reproduction: ```bash set -euxo pipefail rm -rf t git init t cd t git remote add origin https://github.com/pre-commit/pre-commit-hooks git config extensions.partialClone true git fetch origin HEAD --quiet --filter=blob:none --tags git checkout v4.4.0 -- .pre-commit-hooks.yaml ls -al ``` on linux it produces this output: ```console $ bash t.sh + rm -rf t + git init t Initialized empty Git repository in /tmp/t/.git/ + cd t + git remote add origin https://github.com/pre-commit/pre-commit-hooks + git config extensions.partialClone true + git fetch origin HEAD --quiet --filter=blob:none --tags + git checkout v4.4.0 -- .pre-commit-hooks.yaml remote: Enumerating objects: 1, done. remote: Counting objects: 100% (1/1), done. remote: Total 1 (delta 0), reused 0 (delta 0), pack-reused 0 Receiving objects: 100% (1/1), 1.73 KiB | 1.73 MiB/s, done. + ls -al total 36 drwxr-xr-x 3 asottile asottile 4096 May 2 09:48 . drwxrwxrwt 27 root root 20480 May 2 09:47 .. drwxr-xr-x 7 asottile asottile 4096 May 2 09:48 .git -rw-r--r-- 1 asottile asottile 6950 May 2 09:48 .pre-commit-hooks.yaml ``` on windows it does the following: ```console >bash t.sh + rm -rf t + git init t Initialized empty Git repository in C:/Users/Anthony/workspace/pre-commit/t/.git/ + cd t + git remote add origin https://github.com/pre-commit/pre-commit-hooks + git config extensions.partialClone true + git fetch origin HEAD --quiet --filter=blob:none --tags + git checkout v4.4.0 -- .pre-commit-hooks.yaml remote: Enumerating objects: 1, done. remote: Counting objects: 100% (1/1), done. remote: Total 1 (delta 0), reused 0 (delta 0), pack-reused 0 Receiving objects: 100% (1/1), 1.73 KiB | 1.73 MiB/s, done. error: unable to read sha1 file of .pre-commit-hooks.yaml (f8523d4a677b2904df1ebf50c826323b2555edeb) ``` I can work around it by running `git show v4.4.0:.pre-commit-hooks.yaml > /dev/null` before the checkout oddly enough: ```console >bash t.sh + rm -rf t + git init t Initialized empty Git repository in C:/Users/Anthony/workspace/pre-commit/t/.git/ + cd t + git remote add origin https://github.com/pre-commit/pre-commit-hooks + git config extensions.partialClone true + git fetch origin HEAD --quiet --filter=blob:none --tags + git show v4.4.0:.pre-commit-hooks.yaml remote: Enumerating objects: 1, done. remote: Counting objects: 100% (1/1), done. remote: Total 1 (delta 0), reused 0 (delta 0), pack-reused 0 Receiving objects: 100% (1/1), 1.73 KiB | 1.73 MiB/s, done. + git checkout v4.4.0 -- .pre-commit-hooks.yaml + ls -al total 20 drwxr-xr-x 1 Anthony 197609 0 May 2 09:50 . drwxr-xr-x 1 Anthony 197609 0 May 2 09:50 .. drwxr-xr-x 1 Anthony 197609 0 May 2 09:50 .git -rw-r--r-- 1 Anthony 197609 6950 May 2 09:50 .pre-commit-hooks.yaml ``` anthony
