Git branch from hostapd

1. Clone the Remote Repository

First, clone the repository if you haven’t already:

git clone <remote-git-url> myrepo
cd myrepo

Example:

git clone https://example.com/git/myrepo.git
cd myrepo

If you already have the repository, make sure to fetch the latest updates:

git fetch --all

2. Find the Branch Containing `PKG_SOURCE_VERSION`

PKG_SOURCE_VERSION is usually a commit hash (not a branch name), so we need to find which branch contains it.

Run:

git branch -r --contains <commit-hash>

Example:

git branch -r --contains abcdef1234567890

This will list all remote branches that contain the commit.

3. Checkout the Correct Branch

If the previous command returns a branch, checkout that branch:

git checkout <branch-name>

For example, if origin/development contains the commit:

git checkout development

If the commit is not in any branch, you can still checkout the specific commit:

git checkout <commit-hash>

However, this puts you in a detached HEAD state. To avoid this, create a new branch:

git checkout -b my-branch <commit-hash>

4. Alternative: Check Tags

Sometimes, the commit belongs to a tag instead of a branch. To check:

git tag --contains <commit-hash>

If a tag exists, checkout the tag:

git checkout tags/<tag-name> -b my-branch

5. Automate the Process

If you need to automate checking out the correct branch, use this script:

#!/bin/bash

REMOTE_URL="https://example.com/git/myrepo.git"
PKG_SOURCE_VERSION="abcdef1234567890"

# Clone or update the repository
if [ ! -d "myrepo" ]; then
    git clone $REMOTE_URL myrepo
fi

cd myrepo
git fetch --all

# Find the branch containing the commit
BRANCH=$(git branch -r --contains $PKG_SOURCE_VERSION | head -n 1 | awk '{print $1}')

if [ -z "$BRANCH" ]; then
    echo "No branch found for commit $PKG_SOURCE_VERSION. Checking out commit directly..."
    git checkout $PKG_SOURCE_VERSION
else
    BRANCH_NAME=${BRANCH#origin/}
    echo "Checking out branch: $BRANCH_NAME"
    git checkout $BRANCH_NAME
fi

This script:

Clones the repo if not present.
Fetches the latest updates.
Finds the correct branch containing PKG_SOURCE_VERSION.
Checks out the branch (or the commit if no branch is found).

Summary