====== GIT ======

====== Preparation ======

===== bash completion =====

[[https://git-scm.com/book/en/v2/Appendix-A:-Git-in-Other-Environments-Git-in-Bash|A1.6 Appendix A: Git in Other Environments - Git in Bash]]

Package ''git'' contains:
<code>
/etc/bash_completion.d/git-prompt
/usr/share/bash-completion/completions/git
/usr/share/bash-completion/completions/gitk
</code>

<file bash ~/.bashrc>
. /usr/share/bash-completion/completions/git
. /usr/lib/git-core/git-sh-prompt

if [ "$color_prompt" = yes ]; then
#   PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]$(__git_ps1 "(%s)")\[\033[00m\]\$ '
else
#   PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\'$(__git_ps1 "(%s)")'\$ '
fi
</file>



=== git-email ===
<code bash>
sudo apt-get install git-email
git config sendemail.signedoffcc false
git config sendemail.suppressfrom true
</code>

=== replace github's git: links ===
NOTE: Github was disabled git protocol. So only ''https:'' or ssh ''git@'' is valid.

<code bash>
git config --global url.https://github.com/daurnimator/lua-systemd.insteadOf git://github.com/daurnimator/lua-systemd
# or
git config --global url.https://.insteadOf git://
</code>

Keywords: git protocol, ''git:'' protocol

=== replace github https links ===
<code bash>git config --global url.git@github.com:.insteadOf https://github.com/</code>

====== Import HG (mercurial) repo ======
<code bash>
sudo apt-get install hg-fast-export
git init
hg-fast-export -r .
</code>


====== Usage ======

==== fetch moved tags ====
<code bash>git fetch origin --tags --force</code>

==== Undo a commit ====
Undo a commit and redo

<code bash>
$ git commit ...              
$ git reset --soft HEAD~1     
<< edit files as necessary >> 
$ git add ....                
$ git commit -c ORIG_HEAD     
</code>


==== Local copy of one branch from public repo ====
<code bash>
git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
git remote add tilocal /home/user/mirrors/ti-linux-kernel
git fetch ti refs/heads/ti-linux-3.14.y 
git checkout ti-linux-3.14.y
</code>

Now we have latest version from ti-linux-3.14.y branch.
Add our local GitLab server

<code bash>git remote add gitlab ssh://path... </code>

And push current branch (we are on ti-linux-3.14.y after checkout)
<code bash>git push -u gitlab</code>

==== repo clean and repack ====
<code bash>
git reflog expire --expire=1.minute refs/heads/master
git fsck --unreachable      
git prune                   
git gc                
</code>

====== Debug ======
<code bash>
GIT_TRACE=1 git clone ...
GIT_CURL_VERBOSE=1 GIT_TRACE=1 git clone ...
</code>