[FS#911] Problem with login into private git repos

[LEDE Bugs]

The following task has a new comment added:

FS#911 - Problem with login into private git repos
User who did this - Zbyněk Kocur (zokl)

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I try the askPass variable but it doesnt help me. In CLI is login OK, but not in LEDE environment. 
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=911#comment3010