Improved GIT support in fetch.sh, add -s option
Improved GIT support in fetch.sh, add -s option

The -s option allows us to retrieve SHA1 of the
master branch of remote git repo without cloning
it. It could be used only with -g option
With this option the command outputs only sha1
sum

aslushnikov/latex-online,aslushnikov/latex-online,aslushnikov/latex-online,aslushnikov/latex-online