repro: Allow dashes in the version number

Makefile

@@ -1,7 +1,7 @@
 #! /usr/bin/make
 
 # Extract version from git, or if we're from a zipfile, use dirname
-VERSION=$(shell git describe --always --dirty=-modded --abbrev=7 2>/dev/null || pwd | sed -n 's|.*/c\{0,1\}lightning-v\{0,1\}\([0-9a-f.rc]*\)$$|\1|gp')
+VERSION=$(shell git describe --always --dirty=-modded --abbrev=7 2>/dev/null || pwd | sed -n 's|.*/c\{0,1\}lightning-v\{0,1\}\([0-9a-f.rc\-]*\)$$|\1|gp')
 
 ifeq ($(VERSION),)
 $(error "ERROR: git is required for generating version information")

tools/repro-build.sh

@@ -51,7 +51,7 @@ else
 fi
 
 PLATFORM="$OS"-"$VER"
-VERSION=$(git describe --always --dirty=-modded --abbrev=7 2>/dev/null || pwd | sed -n 's,.*/clightning-\(v[0-9.rc]*\)$,\1,p')
+VERSION=$(git describe --always --dirty=-modded --abbrev=7 2>/dev/null || pwd | sed -n 's,.*/clightning-\(v[0-9.rc\-]*\)$,\1,p')
 
 # eg. ## [0.6.3] - 2019-01-09: "The Smallblock Conspiracy"
 # Skip 'v' here in $VERSION