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<https://github.com/IHP-GmbH/IHP-Open-PDK/issues/157|#157 Cloning the submodule `digital` fails>
Issue created by <https://github.com/hpretl|hpretl>
*Environment*

• Klayout Version: n/a
• OS/Platform: n/a

*Expected Behavior*

Cloning the GitHub repo (branch `dev`) of the PDK works.

*Actual Behavior*

It fails with the following error message:

```
24.49 Branch 'dev' set up to track remote branch 'dev' from 'origin'.
24.49 Switched to a new branch 'dev'
24.58 Submodule 'ihp-sg13g2/libs.tech/digital' (git@github.com:hneemann/IHP130.git) registered for path 'ihp-sg13g2/libs.tech/digital'
24.60 Cloning into '/tmp/ihp/ihp-sg13g2/libs.tech/digital'...
24.95 Host key verification failed.
24.95 fatal: Could not read from remote repository.

```

*Steps to Reproduce the Problem*

1. See above, fails at just cloning the PDK repo.
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>

<https://github.com/IHP-GmbH/IHP-Open-PDK/issues/157|#157 Cloning the submodule `digital` fails>
Issue closed as completed by <https://github.com/hpretl|hpretl>
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>

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