git server hang up

[harryxiyou]

harryxiyou@common_vm ~/forest $ date
Tue Dec 9 10:51:08 HKT 2014

harryxiyou@common_vm ~/forest $ ./pull.sh
/lhome/harryxiyou/forest
Already up-to-date.
ssh: connect to host codb.d-thinker.org port 22: Connection timed out
fatal: The remote end hung up unexpectedly
Already up-to-date.
ssh: connect to host codb.d-thinker.org port 22: Connection timed out
fatal: The remote end hung up unexpectedly
ssh: connect to host codb.d-thinker.org port 22: Connection timed out
fatal: The remote end hung up unexpectedly
Already up-to-date.
Already up-to-date.
codb.d-thinker.org[0: 124.248.211.170]: errno=Connection timed out
fatal: unable to connect a socket (Connection timed out)
Already up-to-date.