build

cli: Refactor out `get_fetch_remotes` into git_util.rs #16588

Job	Run time
Build jj-lib without Git support	49s
build (ubuntu-latest)	5m 4s
cargo-deny (advisories)	26s
Check protos	24s
build (macos-13)	6m 58s
cargo-deny (bans licenses sources)	22s
build (macos-14)	3m 44s
Clippy check	2m 28s
Check that MkDocs can build the docs	10s
Check that MkDocs can build the docs with latest Python and uv	12s
Check formatting	18s
build (windows-latest)	6m 52s
build (ubuntu-latest, --all-features)	5m 53s
	33m 40s

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