Read command not working as expected

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Why this script is not working as 'expected' when doing ssh with while read ... really confused?

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Why this is not working in expected way?

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git-sh-setup

GIT-SH-SETUP(1)                                                     Git Manual                                                     GIT-SH-SETUP(1)

NAME

       git-sh-setup - Common Git shell script setup code

SYNOPSIS

       . "$(git --exec-path)/git-sh-setup"

DESCRIPTION

       This is not a command the end user would want to run. Ever. This documentation is meant for people who are studying the Porcelain-ish
       scripts and/or are writing new ones.

       The git sh-setup scriptlet is designed to be sourced (using .) by other shell scripts to set up some variables pointing at the normal Git
       directories and a few helper shell functions.

       Before sourcing it, your script should set up a few variables; USAGE (and LONG_USAGE, if any) is used to define message given by usage()
       shell function. SUBDIRECTORY_OK can be set if the script can run from a subdirectory of the working tree (some commands do not).

       The scriptlet sets GIT_DIR and GIT_OBJECT_DIRECTORY shell variables, but does not export them to the environment.

FUNCTIONS

       die
           exit after emitting the supplied error message to the standard error stream.

       usage
           die with the usage message.

       set_reflog_action
           Set GIT_REFLOG_ACTION environment to a given string (typically the name of the program) unless it is already set. Whenever the script
           runs a git command that updates refs, a reflog entry is created using the value of this string to leave the record of what command
           updated the ref.

       git_editor
           runs an editor of user's choice (GIT_EDITOR, core.editor, VISUAL or EDITOR) on a given file, but error out if no editor is specified
           and the terminal is dumb.

       is_bare_repository
           outputs true or false to the standard output stream to indicate if the repository is a bare repository (i.e. without an associated
           working tree).

       cd_to_toplevel
           runs chdir to the toplevel of the working tree.

       require_work_tree
           checks if the current directory is within the working tree of the repository, and otherwise dies.

       require_work_tree_exists
           checks if the working tree associated with the repository exists, and otherwise dies. Often done before calling cd_to_toplevel, which
           is impossible to do if there is no working tree.

       require_clean_work_tree <action> [<hint>]
           checks that the working tree and index associated with the repository have no uncommitted changes to tracked files. Otherwise it emits
           an error message of the form Cannot <action>: <reason>. <hint>, and dies. Example:

               require_clean_work_tree rebase "Please commit or stash them."

       get_author_ident_from_commit
           outputs code for use with eval to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL and GIT_AUTHOR_DATE variables for a given commit.

       create_virtual_base
           modifies the first file so only lines in common with the second file remain. If there is insufficient common material, then the first
           file is left empty. The result is suitable as a virtual base input for a 3-way merge.

GIT

       Part of the git(1) suite

Git 2.17.1                                                          10/05/2018                                                     GIT-SH-SETUP(1)

Shell Programming and Scripting