arch: set local gitconfig #150

Job	Run time
build-tarball-linux-x64	3m 33s
build-tarball-linux-x64-musl	3m 52s
build-tarball-linux-arm64	4m 3s
build-tarball-linux-arm64-musl	3m 53s
build-tarball-linux-armv7	3m 52s
build-tarball-linux-armv7-musl	3m 52s
build-tarball-linux-armv6	3m 41s
build-tarball-linux-armv6-musl	4m 3s
build-tarball-macos-x64	6m 16s
build-tarball-macos-arm64	8m 0s
e2e-linux-0	2m 7s
deb	31s
rpm	28s
e2e-linux-1	2m 12s
e2e-linux-2	5m 26s
e2e-linux-3	3m 4s
release	42s
bump-aur	13s
bump-aur-bin	13s
bump-alpine	9m 32s
bump-homebrew-formula	0s
	1h 9m 33s

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