shell expect 没有执行预期的命令？

Question

shell 命令如下，目的是在本地合并master代码到master_release分支，然后ssh到远程主机上，执行一个git pull命令。

 cd '/Users/yanwushu/Documents/code/php/erp'

 echo  '----------------------------------> 【切换到 master 分支 】'
 git checkout master
 git pull

 echo  '----------------------------------> 【切换到 master_release 分支】'
 git checkout master_release
 git pull

 echo  '----------------------------------> 【将 master 合并 到 master_release】'
 git merge master
 git push


/usr/bin/expect << eof
set timeout 30
spawn ssh [e-mail]
expect "root@*"  {send "cd /www/wwwroot/oa.xx.com/ \r"}
expect "root@*"  {send "git pull \r"}
expect "root@*"  {send "exit \r"}
eof
echo done!

执行日志如下：

spawn ssh [e-mail]
Last failed login: Sat Feb 18 15:09:23 CST 2023 from xxx.xxx.xxx.xxx on ssh:notty
There were 4564 failed login attempts since the last successful login.
Last login: Fri Feb 17 19:19:25 2023 from xxx.xxx.xxx.xxx
Welcome to  ALIYUN Cloud Server!
[root@localhost ~]# cd /www/wwwroot/oa.xxx.com/ 
[root@localhost oa.xxx.com]# done!
logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[进程已完成]

可见，git pull 命令没有执行，但是重新执行一遍脚本，发现git pull命令又执行了，日志如下：

spawn ssh [e-mail]
Last login: Sat Feb 18 15:09:59 2023 from xxx.xxx.xxx.xxx
Welcome to  ALIYUN Cloud Server!
[root@localhost ~]# cd /www/wwwroot/oa.xxx.com/ 
[root@localhost oa.xxx.com]# git pull 
xxxxx git pull 部分日志忽略
[root@localhost oa.xxx.com]# done!
logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[进程已完成]

请问为何第一次执行时git pull命令没有执行呢？