CRITICAL: Git reset failed for com.duckduckgo.mobile.android

Any ideas what's going on here? It has already failed many times, so this isn't an accidental glitch. It builds fine for me locally. Storage issue?

Log:

== Installed Android Tools ==

INFO: Creating log directory
INFO: Creating temporary directory
INFO: Creating output directory
CRITICAL: Git reset failed
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Entering 'libs/OnionKit'
fatal: Not a git repository: /mnt/russia/fdroiddata/build/com.duckduckgo.mobile.android/.git/modules/libs/OnionKit/modules/libnetcipher/external/memtrust
Stopping at 'libs/OnionKit'; script returned non-zero status.
==== detail end ====