Merge pull request #212 from LedgerHQ/shallowclone #1051

Job	Run time
Compilation for NanoS, X, S+, and Stax (nanos, $NANOS_SDK)	1m 35s
Compilation for NanoS, X, S+, and Stax (nanox, $NANOX_SDK)	1m 48s
Compilation for NanoS, X, S+, and Stax (nanosp, $NANOSP_SDK)	1m 38s
Compilation for NanoS, X, S+, and Stax (stax, $STAX_SDK)	1m 46s
Tests on mainnet (nanos)	31s
Tests with the JS library	1m 22s
Tests on mainnet (nanox)	29s
Tests with the Python library and legacy Bitcoin app	39s
Tests (nanos)	7m 37s
Tests on mainnet (nanosp)	32s
Tests (nanox)	8m 14s
Tests on mainnet (stax)	27s
Tests (nanosp)	8m 26s
Tests for rust client library	1m 40s
Tests (stax)	46m 6s
Unit test	3m 23s
	1h 26m 13s

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