--- git-2.43.0/git-gui/git-gui.sh.orig	2023-11-20 02:28:15.000000000 +0100
+++ git-2.43.0/git-gui/git-gui.sh	2023-11-21 19:47:37.244720600 +0100
@@ -75,6 +75,11 @@
 	return $_iscygwin
 }
 
+proc is_CygwinGit {} {
+	# Cygwin git running with Windows Tcl/Tk
+	return 1
+}
+
 ######################################################################
 ##
 ## PATH lookup
@@ -177,7 +182,11 @@
 if { [info exists ::env(GIT_GUI_LIB_DIR) ] } {
 	set oguilib $::env(GIT_GUI_LIB_DIR)
 } else {
-	set oguilib {@@GITGUI_LIBDIR@@}
+	if {[is_Windows] && [is_CygwinGit]} {
+		set oguilib [exec cygpath --windows --absolute {@@GITGUI_LIBDIR@@}]
+	} else {
+		set oguilib {@@GITGUI_LIBDIR@@}
+	}
 }
 set oguirel {@@GITGUI_RELATIVE@@}
 if {$oguirel eq {1}} {
@@ -1285,7 +1294,11 @@
 
 # v1.7.0 introduced --show-toplevel to return the canonical work-tree
 if {[package vcompare $_git_version 1.7.0] >= 0} {
-	set _gitworktree [git rev-parse --show-toplevel]
+	if {[is_Windows] && [is_CygwinGit]} {
+		set _gitworktree [exec cygpath --windows [git rev-parse --show-toplevel]]
+	} else {
+		set _gitworktree [git rev-parse --show-toplevel]
+	}
 } else {
 	# try to set work tree from environment, core.worktree or use
 	# cdup to obtain a relative path to the top of the worktree. If
@@ -2254,7 +2267,11 @@
 	if {[is_Cygwin]} {
 		set explorer "/bin/cygstart.exe --explore"
 	} elseif {[is_Windows]} {
-		set explorer "explorer.exe"
+		if {[is_CygwinGit]} {
+			set explorer  [_which "explorer"]
+		} else {
+			set explorer "explorer.exe"
+		}
 	} elseif {[is_MacOSX]} {
 		set explorer "open"
 	} else {