sequencer: tolerate abbreviated stopped-sha file
In
0512eabd91 ("sequencer: stop abbreviating stopped-sha file",
2020-09-25), Git was taught both to write full object names to the
stopped-sha file and to require full object names when reading. However,
a user would experience a problem if they started an interactive rebase
using an old version of Git and then continued with a current version of
Git (for example, if the system version of Git was updated in the
meantime).
Teach Git to allow object names of any length when reading.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>