Sometime it’s just a detail.
Just change your include pattern adding a trailing / at the end of include pattern and it’ll work:
rsync -avz --delete --include=specs/install/project1/ \
--exclude=specs/* /srv/http/projects/project/ \
[email protected]:~/projects/project
Or, in alternative, prepare a filter file like this:
$ cat << EOF >pattern.txt
> + specs/install/project1/
> - specs/*
> EOF
Then use the –filter option:
rsync -avz --delete --filter=". pattern.txt" \
/srv/http/projects/project/ \
[email protected]:~/projects/project
For further info go to the FILTER RULES section in the rsync(1) manual page.