Error "An item with the same key(...)" when pulling / pushing from Azure DevOps

First of all, the 3.0.6 version doesn't appear in the "Affects Version/s" list. So I choose the 3.0.5. Not sure if it is also a bug in this Create Issue  But 3.0.6 is what I see when I click in Help -> About in the SourceTree.

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When I try to pull / push from Azure DevOps repositories it gives me the error below.

It doesn't happen if:

• I pull / push with same version, but from other repositories (tested with GitLab and GitHub).
• I pull / push the same repository, but with a previous version (tested with SourceTree version 2.6.0)
• I pull / push the same repository, but with other tool (tested with TortoiseGit)

So, I could reduce the surface to happening at least with SourceTree 3.0.6 pulling repositories from Azure DevOps Git.

Here goes the error log that is shown when I click the "Show Full Output" checkbox:

git -c diff.mnemonicprefix=false -c core.quotepath=false --no-optional-locks fetch origin
fatal: ArgumentException encountered.
An item with the same key has already been added.

fatal: ArgumentException encountered.
An item with the same key has already been added.

error: cannot spawn C:\Users\ruipi\AppData\Local\SourceTree\app-3.0.6\tools\Askpass.exe: No error