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|
#!/bin/sh
usage () {
echo "usage:" $@
exit 127
}
die () {
echo $@
exit 128
}
if test $# -lt 2 || test $# -gt 3
then
usage "$0 <repository> <new_workdir> [<branch>]"
fi
orig_git=$1
new_workdir=$2
branch=$3
# want to make sure that what is pointed to has a .git directory ...
git_dir=$(cd "$orig_git" 2>/dev/null &&
git rev-parse --git-dir 2>/dev/null) ||
die "\"$orig_git\" is not a git repository!"
if test "$git_dir" = ".git"
then
git_dir="$orig_git/.git"
fi
# don't link to a workdir
if test -L "$git_dir/config"
then
die "\"$orig_git\" is a working directory only, please specify" \
"a complete repository."
fi
# make sure the the links use full paths
git_dir=$(cd "$git_dir"; pwd)
# create the workdir
mkdir -p "$new_workdir/.git" || die "unable to create \"$new_workdir\"!"
# create the links to the original repo. explictly exclude index, HEAD and
# logs/HEAD from the list since they are purely related to the current working
# directory, and should not be shared.
for x in config refs logs/refs objects info hooks packed-refs remotes rr-cache
do
case $x in
*/*)
mkdir -p "$(dirname "$new_workdir/.git/$x")"
;;
esac
ln -s "$git_dir/$x" "$new_workdir/.git/$x"
done
# now setup the workdir
cd "$new_workdir"
# copy the HEAD from the original repository as a default branch
cp "$git_dir/HEAD" .git/HEAD
# checkout the branch (either the same as HEAD from the original repository, or
# the one that was asked for)
git checkout -f $branch
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