tarball="syncthing-${GOOS_ST}-${GOARCH}-v${SYNCTHING_VERSION}.${TB_EXT}" \
&& curl -sfSL "https://github.com/syncthing/syncthing/releases/download/v${SYNCTHING_VERSION}/${tarball}" -O \
&& curl -sfSL "https://github.com/syncthing/syncthing/releases/download/v${SYNCTHING_VERSION}/sha1sum.txt.asc" -O \
&& gpg -q --verify sha1sum.txt.asc \
&& grep -E " ${tarball}\$" sha1sum.txt.asc | sha1sum -c - \
tarball="syncthing-${GOOS_ST}-${GOARCH}-v${SYNCTHING_VERSION}.${TB_EXT}" \
&& curl -sfSL "https://github.com/syncthing/syncthing/releases/download/v${SYNCTHING_VERSION}/${tarball}" -O \
&& curl -sfSL "https://github.com/syncthing/syncthing/releases/download/v${SYNCTHING_VERSION}/sha1sum.txt.asc" -O \
&& gpg -q --verify sha1sum.txt.asc \
&& grep -E " ${tarball}\$" sha1sum.txt.asc | sha1sum -c - \