Gist Track File from particular branch using script

track_git_single_file.sh

#! /bin/bash
cd "$(dirname "$0")"
echo "Starting file sync program..."
echo "Start time: $(date)"
GIT_TOKEN=""
GIT_OWNER=""
GIT_BRANCH=""
GIT_REPO=""
GIT_FILE="<git_file_you_want_to_track>"
TMP_FILE="/var/tmp/file_sync.txt"
TARGET_FILE="<path_to_target_filetarget>"

GIT_URL="https://raw.githubusercontent.com/$GIT_OWNER/$GIT_REPO/$GIT_BRANCH/$GIT_FILE"

curl -H "Authorization: token $GIT_TOKEN" \
     -H 'Accept: application/vnd.github.v3.raw' \
     -o $TMP_FILE \
     -L $GIT_URL

DIFF=$(diff $TMP_FILE $TARGET_FILE)
if [ "$DIFF" != "" ]; then
        echo "-- New updates found --"
        lineCounts=$(wc -l <$TMP_FILE)
        echo "Lines: $lineCounts"
        if [[ $lineCounts ]]; then
                echo "- Found More than 100 lines, moving to production"
                cp $TMP_FILE $TARGET_FILE
                echo "- Moved: Updated: $TARGET_FILE"
        fi
else
        echo "--> No updates found"
fi
echo "End time: $(date)"