sourcezap/libexec/srczap/srczap-clone

#!/bin/sh
set -e

##
# variables
localbase=${LOCALBASE:-/usr/local}
libexec=$(dirname "$0")
git="${localbase}"/bin/git
giturl=$1
gitdir=$2
branch=$3
mode=u=rwX,g=rX,o=

##
# functions
gitexec()
{
    doas -n -u _srczap \
         /bin/sh -c "umask ${mode}; ${git} ${1}"
}

##
# main
if ! "${libexec}"/issrczap-member; then
    echo "[x] This command must be run by a member of the '_srczap' group"
    exit 1
fi

if [ -e "${gitdir}/.git" ]; then
    echo "[x] ${gitdir} exists."
    echo "[x] Try 'srczap pull'"
    exit 1
fi

set -x
gitexec "clone ${giturl} ${gitdir}"
cd "${gitdir}"
gitexec "config core.filemode off"
gitexec "checkout -t origin/${branch}"
set +x
echo "[-] Done"