问题1：
$ git pull
fatal: unable to access '×××.git/': server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
解决方案1：
export GIT_SSL_NO_VERIFY=1
但是只是临时解决，另一个项目的git操作依旧出现相同bug
解决方案2：
git config --global http.sslverify false
问题2:
生成SSH密钥
1.查看目录：~/.ssh
2.生成ssh-keygen
3. cat ./id_rsa.pub
问题3：
git push
warning: push.default is unset; its implicit value has changed in
Git 2.0 from 'matching' to 'simple'. To squelch this message
and maintain the traditional behavior, use:
git config --global push.default matching
To squelch this message and adopt the new behavior now, use:
git config --global push.default simple
When push.default is set to 'matching', git will push local branches
to the remote branches that already exist with the same name.
Since Git 2.0, Git defaults to the more conservative 'simple'
behavior, which only pushes the current branch to the corresponding
remote branch that 'git pull' uses to update the current branch.
See 'git help config' and search for 'push.default' for further information.
(the 'simple' mode was introduced in Git 1.7.11. Use the similar mode
'current' instead of 'simple' if you sometimes use older versions of Git)
error: src refspec master does not match any.
error: failed to push some refs to 'https://3reality.tech/gogs/**/weishu_document.git'
原因：
没有git add
问题3：
git commit -m "add"
*** Please tell me who you are.
Run
git config --global user.email "you@example.com"
git config --global user.name "Your Name"
to set your account's default identity.
Omit --global to set the identity only in this repository.
fatal: unable to auto-detect email address (got '**@**-Vostro-3667.(none)')
解决方案：
git config --global user.email "**@××.com"
git config --global user.name "**"
问题4：
git push
Username for 'https://3reality.tech': **
Password for 'https://**@3reality.tech':
No refs in common and none specified; doing nothing.
Perhaps you should specify a branch such as 'master'.
Everything up-to-date
原因：
这是Git 找不到你要提交的版本了。
解决方案：
git push origin master
Username for 'https://3reality.tech': **
Password for 'https://**@3reality.tech':
Counting objects: 7, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (7/7), done.
Writing objects: 100% (7/7), 4.02 MiB | 7.30 MiB/s, done.
Total 7 (delta 0), reused 0 (delta 0)
To https://3reality.tech/gogs/**/weishu_document.git
* [new branch] master -> master
问题5：
git pull
Username for 'https://3reality.tech': **
Password for 'https://**@3reality.tech':
remote: Counting objects: 44, done.
remote: Compressing objects: 100% (44/44), done.
error: insufficient permission for adding an object to repository database .git/objects
fatal: failed to write object
fatal: unpack-objects failed
解决方案：
sudo chmod g+w -R .git/objects
