Note that v1.4.4.5 supports pack index v2, and describe how to keep
your repositories backwards-compatible, shall you need to.
Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
By default, packfiles created with this version uses delta-base-offset
encoding introduced in v1.4.4. Pack idx files are using version 2 that
allows larger packs and added robustness thanks to its CRC checking,
-introduced in v1.5.2.
+introduced in v1.5.2 and v1.4.4.5. If you want to keep your repositories
+backwards compatible past these versions, set repack.useDeltaBaseOffset
+to false or pack.indexVersion to 1, respectively.
GIT_CONFIG, which was only documented as affecting "git config", but
actually affected all git commands, now only affects "git config".