v1.7.0

fix(modules/git/bootstrap): remove lazy assignments @dudymas (#335)

what

• remove recursive assignments for git variables

why

• recursive assignments cause race conditions
• none of the git bootstrap operations are costly to calculate
• make 4.4 exhibits a complete deadlock due to all the recursive assignments

references

• this fixes #333
• https://www.gnu.org/software/make/manual/html_node/Recursive-Assignment.html