Unstable connection to GIT repositories

Hi there,

We are having trouble accessing our GIT repositories.
This shows as longer waiting time than normal, and sometimes timeouts, when pushing and pulling code via SSH connection using SSH keys.

For instance, a colleague got the following message while trying to pull code:
Stopping at 'sites/all/themes/custom/alleradmin'; script returned non-zero status.

We usually don't have any problems accessing our GIT repositories via SSH with SSH keys, so this is strange behavior.

Are there any stability issues at the moment?
Can you help us with this?

Regards,
Peter Meyer