[BUG] Segfault in "git submodule"

[New LWP 19644] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `git submodule--helper status'. Program terminated with signal SIGSEGV, Segmentation fault. #0 refs_read_raw_ref (type=<optimized out>, referent=<optimized out>, oid=<optimized out>, refname=<optimized out>, ref_store=<optimized out>) at refs.c:1451 1451 return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, type); #0 refs_read_raw_ref (type=<optimized out>, referent=<optimized out>, oid=<optimized out>, refname=<optimized out>, ref_store=<optimized out>) at refs.c:1451 #1 refs_resolve_ref_unsafe (refs=0x0, refname=refname@entry=0x55e863062253 "HEAD", resolve_flags=resolve_flags@entry=1, oid=oid@entry=0x7ffdc834b1c0, flags=flags@entry=0x7ffdc834b1bc) at refs.c:1493 #2 0x000055e862fcad5c in refs_read_ref_full (flags=0x7ffdc834b1bc, oid=0x7ffdc834b1c0, resolve_flags=1, refname=0x55e863062253 "HEAD", refs=<optimized out>) at refs.c:224 #3 refs_head_ref (refs=<optimized out>, fn=fn@entry=0x55e862f25fb0 <handle_submodule_head_ref>, cb_data=cb_data@entry=0x7ffdc834b300) at refs.c:1314 #4 0x000055e862f292a2 in status_submodule (flags=0, prefix=<optimized out>, ce_flags=0, ce_oid=0x55e86468d4d4, path=0x55e86468d4e8 "lpc-doc") at builtin/submodule--helper.c:624 #5 status_submodule_cb (cb_data=0x7ffdc834b240, list_item=0x55e86468d490) at builtin/submodule--helper.c:665 #6 for_each_listed_submodule (cb_data=<optimized out>, fn=<optimized out>, list=<optimized out>) at builtin/submodule--helper.c:404 #7 module_status (argc=<optimized out>, argv=<optimized out>, prefix=<optimized out>) at builtin/submodule--helper.c:698 #8 0x000055e862eaec95 in run_builtin (argv=<optimized out>, argc=<optimized out>, p=<optimized out>) at git.c:346 #9 handle_builtin (argc=<optimized out>, argv=<optimized out>) at git.c:554 #10 0x000055e862eaf985 in run_argv (argv=0x7ffdc834be20, argcp=0x7ffdc834be2c) at git.c:606 #11 cmd_main (argc=<optimized out>, argv=<optimized out>) at git.c:683 #12 0x000055e862eae96a in main (argc=3, argv=0x7ffdc834c078) at common-main.c:43