hugo mod get without arguments fails with 0.115.0

[ITler]

What version of Hugo are you using (hugo version)?

$ hugo version
v0.115.0-67caf50698783d3b3d78559ac81483d83e5e1a35+extended linux/amd64 BuildDate=2023-06-29T15:56:39Z VendorInfo=gohugoio

$ go version
go version go1.20.3 linux/amd64

Does this issue reproduce with the latest release?

yes

$ hugo mod get
panic: runtime error: index out of range [0] with length 0

goroutine 1 [running]:
github.com/gohugoio/hugo/commands.newModCommands.func16({0x2a6ee00?, 0xc000014018?}, 0xc000d9fbb8?, 0x89d94b?, {0x3c93e60?, 0x4?, 0xc00012db80?})
	/root/project/hugo/commands/mod.go:227 +0x22e
github.com/gohugoio/hugo/commands.(*simpleCommand).Run(0x1?, {0x2a7d558?, 0xc00004a120?}, 0x0?, {0x3c93e60?, 0xc000133f20?, 0xc000d9fbd0?})
	/root/project/hugo/commands/commandeer.go:597 +0x43
github.com/bep/simplecobra.(*Commandeer).compile.func1(0xc0003d7420?, {0x3c93e60?, 0x0?, 0x0?})
	/root/project/gomodcache/github.com/bep/simplecobra@v0.3.2/simplecobra.go:113 +0x52
github.com/spf13/cobra.(*Command).execute(0xc000d7e000, {0x3c93e60, 0x0, 0x0})
	/root/project/gomodcache/github.com/spf13/cobra@v1.7.0/command.go:940 +0x862
github.com/spf13/cobra.(*Command).ExecuteC(0xc000a5a600)
	/root/project/gomodcache/github.com/spf13/cobra@v1.7.0/command.go:1068 +0x3bd
github.com/spf13/cobra.(*Command).ExecuteContextC(...)
	/root/project/gomodcache/github.com/spf13/cobra@v1.7.0/command.go:1001
github.com/bep/simplecobra.(*Exec).Execute(0xc000618240, {0x2a7d558?, 0xc00004a120?}, {0xc000040190?, 0x509b88?, 0xc000081168?})
	/root/project/gomodcache/github.com/bep/simplecobra@v0.3.2/simplecobra.go:155 +0xd9
github.com/gohugoio/hugo/commands.Execute({0xc000040190, 0x2, 0x2})
	/root/project/hugo/commands/commandeer.go:66 +0x312
main.main()
	/root/project/hugo/main.go:25 +0x65

executing hugo mod get -u works fine

[bep]

I guess you can do

hugo mod get .

[ITler]

Sorry, but this also does fail

$ hugo mod get .
go: .: no package to get in current directory
Error: failed to get ["-d" "."]: failed to execute 'go [get -d .]': failed to execute binary "go" with args [get -d .]: go: .: no package to get in current directory
 *errors.errorString

[ITler]

@bep may I kindly ask to have a look again

[github-actions]

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