v1.9.3

This release includes a number of bugfixes and compatibility improvements, particularly around SHA256 support.

• cmake: fix linker error when using ninja build generator by @kcsaul in #7249
• Handle redirects with Content-Length: 0 correctly by @ethomson in #7246
• ci: use poxygit v0.8.1 in the tests by @ethomson in #7248
• Zero indexer stats in pack objects by @ethomson in #7243
• submodule: git_index_add_bypath does not move conflict entries to REUC by @lrm29 in #7003
• fix: prevent SSH timeout infinite loop and enable TCP keepalive by @ambv in #7165
• merge_files: avoid UB in xdiff by @ethomson in #7239
• git_merge_file_from_index: handle cases when a child (ours or theirs) is null by @eantoranz in #7092
• cmake: write git.h.tmp to current binary directory by @kcsaul in #7241
• fix(pack): ensure pack_backend__read returns null terminated buffer by @kanru in #7238
• Check object lengths against headers in read_loose by @howtonotwin in #7178
• cmake: don't recreate git2.h unnecessarily by @ethomson in #7234
• Memory Backend Corruption Fix by @kcsaul in #7232
• Fixed a heap-buffer-overflow in the smart_pkt.c:set_data function by @oliverchang in #7118
• fix(transport): get oid_type on local transport by @weihanglo in #7229
• GIT_REMOTE_DOWNLOAD_TAGS_ALL: remove stray "the" in docs by @DanielEScherzer in #7228
• fix(clone): propagate object format in local clone by @weihanglo in #7226
• repo: Fix possible null pointer dereference by @csware in #7225
• revparse: Allow HEAD abbreviation @ by @KoviRobi in #7218
• camke: include libssh2 in Requires.private in the PC file by @carlosmn in #7215
• futils: fix undefined behavior in O_FSYNC fallback definition by @cehoffman in #7211
• pcre: actually fix dangling-pointer warning by @ethomson in #7206
• pcre: update cmake warnings for non-gcc by @ethomson in #7205
• Fix some warnings with gcc by @ethomson in #7203
• fix: apply insteadOf from global config for detached remotes by @weihanglo in #7195
• Fix git_index_entry documentation by @bakersdozen123 in #7192
• config: Fix potential null value passed to %s by @ethomson in #7190
• index: support USE_NSEC=OFF by @ethomson in #7187
• feat(remote): expose git_remote_oid_type by @weihanglo in #7185
• fix(smart): keep caps across RPC stream resets by @weihanglo in #7183
• fix wrong comment by @Murmele in #7181
• fix(sha256): pass correct oid type by @weihanglo in #7179
• examples: correct git_commit_time comment by @qaqland in #7175
• tests: update to latest clar by @ethomson in #7173
• delta: fix undefined behavior in hdr_sz varint parsing by @Oblivionsage in #7172
• ci: Update macos-13 to macos-14 images on GitHub Actions by @ambv in #7167
• ci: Fix cases of -Werror=discarded-qualifiers raised by @gcc 15.2 by @ambv in #7164
• Use CMAKE_INSTALL_INCLUDEDIR for libgit2package INSTALL_INTERFACE by @aware70 in #7155
• Fix C4703 uninitialized pointer variable warnings by @ShiningMassXAcc in #7154
• test: check the correct filesystem for case-sensitivity by @ambv in #7153
• ci: update ci/docker/fedora to work with Rawhide 44 by @ambv in #7152
• refs: honor REFSPEC_SHORTHAND for multi-segment refs by @roberth in #7148
• config: Fix potential null value passed to %s by @orgads in #7131
• Fix potential access to uninitialized variables by @orgads in #7130
• refspec: Detect DEL character in is_valid_name by @xokdvium in #7120
• Update documentation to clarify that cert cb is always called by @ehuss in #7119
• Update racy.c reference by @emmanuel-ferdman in #7091
• Avoid duplicate definition of git_http_auth_dummy. by @JohannesWilde in #7077