triage: refresh the reused source clone and prune clean old ones

.github/triage/PLAYBOOK.md

@@ -41,8 +41,12 @@ The partial clone keeps the full history, which step 6 compares against `main`.
 Releases are tagged `r<number>`. For a `-git` package or a source build, use
 the commit from the context file. If neither the context file nor the user
 knows the version, say so and use `main`, treating file and line references as
-approximate. Never guess a version. Reuse an existing clone instead of cloning
-again.
+approximate. Never guess a version.
+
+If the clone for this ref already exists, reuse it and run `git fetch origin`
+so step 6 sees the current `main`. Before cloning a new ref, remove the other
+entries in the source cache directory whose `git status --porcelain` is empty;
+keep any clone with local changes and tell the user it is there.
 
 ## 5. Investigate
 

README.md

@@ -34,8 +34,8 @@ Close SteamVR and Settings before installing or upgrading.
 On Arch Linux and derivatives, install the prebuilt package from the [latest release](https://github.com/lbgos/rift-s-linux/releases/latest):
 
 ```sh
-curl -LO https://github.com/lbgos/rift-s-linux/releases/download/r31/rift-s-linux-bin-31-1-x86_64.pkg.tar.zst
-sudo pacman -U rift-s-linux-bin-31-1-x86_64.pkg.tar.zst
+curl -LO https://github.com/lbgos/rift-s-linux/releases/download/r32/rift-s-linux-bin-32-1-x86_64.pkg.tar.zst
+sudo pacman -U rift-s-linux-bin-32-1-x86_64.pkg.tar.zst
 ```
 
 To build the latest `main` instead, run `makepkg -si` in [packaging/aur/basalt-monado-rifts](packaging/aur/basalt-monado-rifts), then in [packaging/aur/rift-s-linux-git](packaging/aur/rift-s-linux-git). AUR submission is pending.
@@ -43,9 +43,9 @@ To build the latest `main` instead, run `makepkg -si` in [packaging/aur/basalt-m
 On other distributions, install the universal build into your home directory. It needs no SteamVR launch option; the udev rule asks for your password once. Settings needs glibc 2.35 or newer and WebKitGTK 4.1 (Debian/Ubuntu `libwebkit2gtk-4.1-0`, Fedora `webkit2gtk4.1`).
 
 ```sh
-curl -LO https://github.com/lbgos/rift-s-linux/releases/download/r31/rift-s-linux-r31-x86_64.tar.xz
-tar -xf rift-s-linux-r31-x86_64.tar.xz
-./rift-s-linux-r31-x86_64/install.sh
+curl -LO https://github.com/lbgos/rift-s-linux/releases/download/r32/rift-s-linux-r32-x86_64.tar.xz
+tar -xf rift-s-linux-r32-x86_64.tar.xz
+./rift-s-linux-r32-x86_64/install.sh
 ```
 
 `install.sh --uninstall` removes it. Remove the universal build before installing a system package, and the reverse. [packaging/universal](packaging/universal) describes how it is built.