我正在用python3.5和GitPython模块编写更新钩子。
对于初学者，我只想迭代已添加/删除/修改的文件并将其保存到文件中。 这是钩子：
import git
import sys
branch, oldref, newref = sys.argv[1:]
print('oldref: {0}'.format(oldref))
print('newref: {0}'.format(newref))
repo = git.Repo('/srv/test')
oldcommit = repo.commit(oldref)
newcommit = repo.commit(newref)
with open(r'/tmp/hook.stdout', 'w') as outfile:
for diff in oldcommit.diff(newcommit):
outfile.write('{0}\n'.format(diff.b_path))
当我尝试推送存储库时，我收到以下错误：
remote: oldref: a38d324b84327e428127182b2d36b03afa73c11c
remote: newref: 1fbc70042891ecddef104f1938259b30f5f1e912
remote: Traceback (most recent call last):
remote: File "hooks/update", line 10, in <module>
remote: oldcommit = repo.commit(oldref)
remote: File "/usr/local/lib/python3.5/dist-packages/git/repo/base.py", line 433, in commit
remote: return self.rev_parse(text_type(rev) + "^0")
remote: File "/usr/local/lib/python3.5/dist-packages/git/repo/fun.py", line 193, in rev_parse
remote: obj = name_to_object(repo, rev[:start])
remote: File "/usr/local/lib/python3.5/dist-packages/git/repo/fun.py", line 130, in name_to_object
remote: return Object.new_from_sha(repo, hex_to_bin(hexsha))
remote: File "/usr/local/lib/python3.5/dist-packages/git/objects/base.py", line 64, in new_from_sha
remote: oinfo = repo.odb.info(sha1)
remote: File "/usr/local/lib/python3.5/dist-packages/git/db.py", line 37, in info
remote: hexsha, typename, size = self._git.get_object_header(bin_to_hex(sha))
remote: File "/usr/local/lib/python3.5/dist-packages/git/cmd.py", line 940, in get_object_header
remote: return self.__get_object_header(cmd, ref)
remote: File "/usr/local/lib/python3.5/dist-packages/git/cmd.py", line 929, in __get_object_header
remote: return self._parse_object_header(cmd.stdout.readline())
remote: File "/usr/local/lib/python3.5/dist-packages/git/cmd.py", line 891, in _parse_object_header
remote: raise ValueError("SHA could not be resolved, git returned: %r" % (header_line.strip()))
remote: ValueError: SHA could not be resolved, git returned: b''
remote: error: hook declined to update refs/heads/master
如果我手动运行脚本：
python3.5 /path_to_repo/.git/hooks/update refs/heads/master SHA1 SHA2
它运行正常并将文件名保存到文件中，我尝试使用不同的SHA，如果我使用我在错误消息中看到的SHA运行脚本（oldref，newref）我得到一个空文件但是没有错误消息（因为提交已被拒绝，我认为newref SHA不会出现在远程存储库中）。 我错过了什么？