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abuild, as packaged in Alpine Linux, does not depend on git. But when you use it without git, it will print out errors like the following: /usr/bin/abuild: line 2554: git: not found With this commit, it saves the git_path in the beginning (just like abuild_path). Later in the code it does not try to run git if that variable is empty. Notably `abuild rootbld` is already checking whether `abuild-rootbld` is installed, and that subpackage of `abuild` does already depend on `git`. So no additional check was added before using `git ` inside `rootbld`. Fixes #32
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