fix branch on sandag external test #1008

Job	Run time
linux-64-py	5m 36s
macOS	6m 46s
Standard 1-Zone Example (MTC)	47m 26s
Standard 2-Zone Example (SANDAG)	1h 15m 1s
Estimation Mode Unit Tests	8m 13s
win-64	9m 17s
placeholder_psrc	51m 16s
prototype_mtc	51m 43s
random_seed_generation_test	3m 50s
prototype_mtc_extended	1h 19m 43s
prototype_marin	1m 44s
prototype_mwcog	56m 58s
placeholder_sandag	2h 34m 52s
prototype_sandag_xborder	6m 22s
production_semcog	7m 51s
placeholder_multiple_zone	11m 10s
Expression Profiling Tests	7m 49s
develop-docbuild	-1s
	9h 45m 36s

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