From: Johannes Schindelin <johannes.schindelin@xxxxxx> While it is true that we never add unreachable commits into pack files intentionally (as `git repack`'s documentation states), we must not forget that a `git fetch --prune` (or even a `git fetch` when a ref was force-pushed in the meantime) can make a commit unreachable that was reachable before. Therefore it is not safe to assume that a `git repack -adlf` will keep unreachable commits alone (under the assumption that they had not been packed in the first place). This is particularly important to keep in mind when looking at the `.git/shallow` file: if any commits listed in that file become unreachable, it is not a problem, but if they go missing, it *is* a problem. One symptom of this problem is that a deepening fetch may now fail with fatal: error in object: unshallow <commit-hash> To avoid this problem, let's prune the shallow list in `git repack` when the `-d` option is passed, unless `-A` is passed, too (which would force the now-unreachable objects to be turned into loose objects instead of being deleted). Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx> --- builtin/repack.c | 4 ++++ t/t5537-fetch-shallow.sh | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/builtin/repack.c b/builtin/repack.c index 6c636e159..45f321b23 100644 --- a/builtin/repack.c +++ b/builtin/repack.c @@ -444,6 +444,10 @@ int cmd_repack(int argc, const char **argv, const char *prefix) if (!quiet && isatty(2)) opts |= PRUNE_PACKED_VERBOSE; prune_packed_objects(opts); + + if (!(pack_everything & LOOSEN_UNREACHABLE) && + is_repository_shallow()) + prune_shallow(0); } if (!no_update_server_info) diff --git a/t/t5537-fetch-shallow.sh b/t/t5537-fetch-shallow.sh index 561485d31..d32ba20f9 100755 --- a/t/t5537-fetch-shallow.sh +++ b/t/t5537-fetch-shallow.sh @@ -186,7 +186,7 @@ EOF test_cmp expect actual ' -test_expect_failure '.git/shallow is edited by repack' ' +test_expect_success '.git/shallow is edited by repack' ' git init shallow-server && test_commit -C shallow-server A && test_commit -C shallow-server B && -- gitgitgadget
