Use .in template for git@.service to ensure paths are substituted

The paths don't change often, but if they do this is one less place
which will need to be updated.  It also makes it easier for anyone
rebuilding the packages to change the defaults.

git.spec

@@ -73,7 +73,7 @@ Source11:       git.xinetd.in
 Source12:       git.conf.httpd
 Source13:       git-gui.desktop
 Source14:       gitweb.conf.in
-Source15:       git@.service
+Source15:       git@.service.in
 Source16:       git.socket
 
 # Script to print test failure output (used in %%check)
@@ -487,8 +487,11 @@ rm -rf %{buildroot}%{_mandir}
 
 mkdir -p %{buildroot}%{_localstatedir}/lib/git
 %if %{use_systemd}
-mkdir -p %{buildroot}%{_unitdir}
-cp -a %{SOURCE15} %{SOURCE16} %{buildroot}%{_unitdir}
+install -Dp -m 0644 %{SOURCE16} %{buildroot}%{_unitdir}/git.socket
+perl -p \
+    -e "s|\@GITEXECDIR\@|%{gitexecdir}|g;" \
+    -e "s|\@BASE_PATH\@|%{_localstatedir}/lib/git|g;" \
+    %{SOURCE15} > %{buildroot}%{_unitdir}/git@.service
 %else
 mkdir -p %{buildroot}%{_sysconfdir}/xinetd.d
 perl -p \
@@ -768,6 +771,7 @@ rm -rf %{buildroot}
 %changelog
 * Fri Jan 12 2018 Todd Zullinger <tmz@pobox.com>
 - Add %%{emacs_filesystem} to simplify emacs support
+- Use .in template for git@.service to ensure paths are substituted
 
 * Thu Jan 11 2018 Todd Zullinger <tmz@pobox.com>
 - Update BuildRequires for tests

git@.service

@@ -1,8 +0,0 @@
-[Unit]
-Description=Git Repositories Server Daemon
-Documentation=man:git-daemon(1)
-
-[Service]
-User=nobody
-ExecStart=-/usr/libexec/git-core/git-daemon --base-path=/var/lib/git --export-all --user-path=public_git --syslog --inetd --verbose
-StandardInput=socket

git@.service.in

@@ -0,0 +1,8 @@
+[Unit]
+Description=Git Repositories Server Daemon
+Documentation=man:git-daemon(1)
+
+[Service]
+User=nobody
+ExecStart=-@GITEXECDIR@/git-daemon --base-path=@BASE_PATH@ --export-all --user-path=public_git --syslog --inetd --verbose
+StandardInput=socket