How to get the previous image of git of master baranch

[Tatsuro M. <tma...@ya...>]

Please show me tbe way to get the previous image git go master branch.

For my cygwin build of gnuplot on the development source, gnuplot does not run 
$ src/gnuplot
(nothing happen) 
$ 
(back to prompt)

I exucute gnuplot via gdb and set back trace to main but gnuplot ends.

I want to get the previous git source to see from what change causes the issue.
I note thar I could execute gnuplot 5.4.3 built myself.

Thank for advance.

Tatsuro