>>> import libssh2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: /usr/lib64/python3.11/site-packages/libssh2.cpython-311-x86_64-linux-gnu.so: undefined symbol: PyCObject_FromVoidPtr

This shows up during the build as well:

src/ssh2.c: In function ‘PyInit_libssh2’:
src/ssh2.c:71:24: warning: implicit declaration of function ‘PyCObject_FromVoidPtr’; did you mean ‘PyLong_FromVoidPtr’? [-Wimplicit-function-declaration]
   71 |         c_api_object = PyCObject_FromVoidPtr((void *)SSH2_API, NULL);
      |                        ^~~~~~~~~~~~~~~~~~~~~
      |                        PyLong_FromVoidPtr
src/ssh2.c:71:22: warning: assignment to ‘PyObject *’ {aka ‘struct _object *’} from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
   71 |         c_api_object = PyCObject_FromVoidPtr((void *)SSH2_API, NULL);
      |                      ^

And even the first build with a supposed Python 3 port (libssh2-python-0.7.1-18.fc27) suffered from this, according to the Koji build logs.

The package will stop building once the Fedora compiler no longer accepts implicit function declarations.

Given the package is unusable, and no one has noticed in five years, it should probably just be retired.