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Git 進階使用

使用 rev-parse
# Getting the top-level directory
git rev-parse --show-toplevel

# Find your way home
git rev-parse --show-cdup

## Current location
# 判斷是否在專案目錄 <git-repo>/.git 底下 
git rev-parse --is-inside-git-dir
# 判斷是否在專案目錄 <git-repo> 底下 (不包含 .git 目錄下)
git rev-parse --is-inside-work-tree
合併發生衝突
Git credential cache

This command caches credentials for use by future Git programs. The stored credentials are kept in memory of the cache-daemon process (instead of being written to a file) and are forgotten after a configurable timeout.

git config credential.helper cache
git config credential.helper 'cache --timeout=3600'
Shallow Clone (淺複製)

何時使用 shallow clone:

    You don’t need the full commit history You want faster setup for CI/CD pipelines You’re working with large repositories 
    # Shallow clone
# Limit the clone to 100 commits before the current repository HEAD.
git clone --depth=100 <Repository_URL>

# Shallow Cloning Only a Single Branch
git clone --depth 100 <repository_URL> --single-branch --branch=<branch-name>

# Clone commits since a specific date
git clone --shallow-since="2024-01-01" <repository_URL>

# Skip large file downloads
git clone --filter=blob:none <Repository_URL>

# Unshallow a shallow clone
git fetch --unshallow

    Common issues with shallow clones

      git merge-base git rebase git bisect

      Fix: Run git fetch --unshallow or avoid shallow clone in those contexts.

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