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**Date** **Thread**

I made a backup of the repo with rsync.

It leaves around a lock file, which after I clear out and run `git
fetch --update-head-ok` again, it'll hit the same error.

If I put a little debugging into the while loop:

        while (prefix && *prefix) {
            if (*refname < *prefix) {
                printf("Comparing %s to %s\n",
                       refname, prefix);
                BUG("packed-refs backend yielded reference preceding
its prefix");

then my fetch produces:

Comparing ð??§ to zuora-params-orders-sorbet/
(in case that doesn't come through well, that's a shaved-ice-emoji,
according to a google search, which someone decided to use within one
of their branch names)

In this case, the utf-8 characters will have individual bytes whose
values are greater than 127, which for a signed character will be
represented by a negative number.  I tried tweaking the loop to:

        while (prefix && *prefix) {
            if ((unsigned char)*refname < (unsigned char)*prefix) {
                printf("Comparing %d to %d\n",
                       *refname, *prefix);
                printf("Comparing %s to %s\n",
                       refname, prefix);
                BUG("packed-refs backend yielded reference preceding
its prefix");

but that just lets it proceed through the loop four times before dying:

Comparing 0 to 97
Comparing  to a-params-orders-sorbet/
BUG: refs/packed-backend.c:988: packed-refs backend yielded reference
preceding its prefix
Aborted (core dumped)

meaning it eats up the four bytes from the shaved-ice-emoji and the
first four bytes of prefix "zuor" and then hits the error, so I
suspect it needs to handle comparisons a little more broadly.