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Haskell, (削除) 41 (削除ここまで) 47 bytes

f l|w<-take 5 l,w=="hello"=w|a:b<-l=a:f b|1<2=l

Haskell's laziness handles the infinite input/output quit well.

Try it online!

Edit: didn't handle finite input - fixed. Thanks @Leo for pointing out.

Haskell, (削除) 41 (削除ここまで) (削除) 47 (削除ここまで) 43 bytes

f l|w@"hello"<-take 5l=w|a:b<-l=a:f b|1<2=l

Haskell's laziness handles the infinite input/output quit well.

Try it online!

Edit: didn't handle finite input - fixed. Thanks @Leo for pointing out.

Edit II: @Ørjan Johansen saved 4 bytes. Thanks!

Haskell, 41 bytes

f l|w<-take 5 l,w=="hello"=w|a:b<-l=a:f b

Haskell's laziness handles the infinite input/output quit well.

Try it online!

Haskell, (削除) 41 (削除ここまで) 47 bytes

f l|w<-take 5 l,w=="hello"=w|a:b<-l=a:f b|1<2=l

Haskell's laziness handles the infinite input/output quit well.

Try it online!

Edit: didn't handle finite input - fixed. Thanks @Leo for pointing out.

Haskell, 41 bytes

f l|w<-take 5 l,w=="hello"=w|a:b<-l=a:f b

Haskell's laziness handles the infinite input/output quit well.

Try it online!

Haskell, 41 bytes

f l|w<-take 5 l,w=="hello"=w|a:b<-l=a:f b

Haskell's laziness handles the infinite input/output quit well.

Try it online!