所以我有以下情况：
# Changes to be committed:
# (use "git reset HEAD <file>..." to unstage)
#
# modified: ../push-test.xml
#
# Changes not staged for commit:
# (use "git add <file>..." to update what will be committed)
# (use "git checkout -- <file>..." to discard changes in working directory)
#
# modified: ../push-test.xml
我想打印staged push-test.xml的内容。如何实现呢？