oi Rodrigo, Obrigada por ajudar. Porém ele continua com o mesmo erro. Segue abaixo.
Eclipse - Estudos/Java/Curso Alura/Spring Boot API REST/forum (main)
$ git hash-object -w .gitignore
warning: LF will be replaced by CRLF in .gitignore.
The file will have its original line endings in your working directory
29f81acc470dd4e7d6b78285c4672c86ff0e7022
Eclipse - Estudos/Java/Curso Alura/Spring Boot API REST/forum (main)
fatal: failed to read object 153c9335ebd71e66178495914ea0d42e367b909c: Invalid argument
Eclipse - Estudos/Java/Curso Alura/Spring Boot API REST/forum (main)
$ git commit -m 'teste'
error: invalid object 100644 153c9335ebd71e66178495914ea0d42e367b909c for '.gitignore'
error: invalid object 100644 153c9335ebd71e66178495914ea0d42e367b909c for '.gitignore'
error: Error building trees
Eclipse - Estudos/Java/Curso Alura/Spring Boot API REST/forum (main)
$