Support tarring up the HEAD of the current branch.

debian/changelog

@@ -184,6 +184,7 @@ nx-libs (2:3.5.0.32-0x2go1) UNRELEASED; urgency=low
       in tarball (special focuse on the nx-libs-lite tarball).
     + Allow patch files names having a dash next to the four digits (i.e.,
       1234-<patchname>.<suffix>).
+    + Support tarring up the HEAD of the current branch.
   * debian/COPYING.full+lite:
     + Replace content with GPL-2 license text, because that is the overall
       (i.e., strictest) license we have to deal with in nx-libs.

debian/roll-tarballs.sh

@@ -53,13 +53,13 @@ else
 fi
 
 if [ x"$RELEASE" == "xHEAD" ]; then
-    CHECKOUT="HEAD"
+    CHECKOUT=refs/heads/$(git rev-parse --abbrev-ref HEAD)
 fi
 
 if ! git rev-parse --verify -q "$CHECKOUT" >/dev/null; then
     echo "   '${RELEASE}' is not a valid release number because there is no git tag named ${CHECKOUT}."
     echo "   Please specify one of the following releases:"
-    echo "HEAD"
+    echo "HEAD (on branch `git rev-parse --abbrev-ref HEAD`)"
     git tag -l | grep "^redist" | cut -f2 -d"/" | sort -u
     exit 1
 fi