BitBucket - Mirror GitHub Organization Error

[Leslie Attwell]

We are attempting to mirror our GitHub org using the "Mirror GitHub Organization" Built-in Script Runner and getting the following error:

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'/usr/local/bin/git -c gc.auto=0 -c credential.helper= fetch --force --prune --progress https://myapikey:x-oauth-basic@github.com/myorg/myrepo.git +refs/*:refs/*' exited with code 128 saying: fatal: Unable to find remote helper for 'https'
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Caused by: com.atlassian.utils.process.ProcessException: Non-zero exit code: 128

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Using the preview function works perfectly.