snapcraft: qemu: Use more of snapcraft's default pull mechanisms

 - Switch to source-commit and empty source-submodules.
 - Reduce customisations to override-pull stage.
 - Switch back to gitlab for source.
 - Remove unnecessary submodule replacement.

Signed-off-by: Thomas Parrott <[email protected]>

snapcraft.yaml

@@ -750,8 +750,10 @@ parts:
       - libusb
       - spice-protocol
       - spice-server
-    source: https://github.com/qemu/qemu
+    source: https://gitlab.com/qemu-project/qemu
+    source-commit: 6bbce8b464206e6622216b62841cb3e953d56eb8 # v8.0.5
     source-depth: 1
+    source-submodules: []
     source-type: git
     plugin: autotools
     autotools-configure-parameters:
@@ -816,25 +818,11 @@ parts:
       craftctl default
     override-pull: |-
       [ "$(uname -m)" != "x86_64" ] && [ "$(uname -m)" != "aarch64" ] && [ "$(uname -m)" != "ppc64le" ] && [ "$(uname -m)" != "s390x" ] && exit 0
-      set -ex
-
-      # We have to do this manual git clone because of edk2/subhook submodule URL has changed.
-      # See https://github.com/tianocore/edk2/commit/95d8a1c255cfb8e063d679930d08ca6426eb5701
-      # What is interesting is that we don't even need to do:
-      # git config --global url.https://github.com/tianocore/edk2-subhook.git.insteadOf https://github.com/Zeex/subhook.git
-      # because QEMU version which we checkout points to that version of edk2 which does not depends on subhook submodule.
-      # And as we do `git submodule update --init --recursive` *after* `git checkout ..` we have no problems.
-      # While if we do the same with built-in functionality in snapcraft it fails, because snapcraft does
-      # `git clone --recurse-submodules ...` and pulls master branch and fails on edk2/subhook before snapcraft does
-      # `git checkout ...` to the specified commit.
-
-      git config --global transfer.fsckobjects true
-
-      git clone https://github.com/qemu/qemu .
+      craftctl default
 
-      # FIXME: check if we can get rid of override-pull after the next QEMU version bump
-      git checkout 6bbce8b464206e6622216b62841cb3e953d56eb8 # v8.0.5
+      set -ex
 
+      # Pull submodules after switching to source-commit
       git submodule update --init --recursive
     override-build: |-
       [ "$(uname -m)" != "x86_64" ] && [ "$(uname -m)" != "aarch64" ] && [ "$(uname -m)" != "ppc64le" ] && [ "$(uname -m)" != "s390x" ] && exit 0