checkout: check whether commit exists and warn if it doesn't

managarm · Jan 23, 2023 · f9c2b64 · f9c2b64
1 parent c0bf146
commit f9c2b64
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/xbstrap/base.py b/xbstrap/base.py
@@ -2086,6 +2086,18 @@ def checkout_src(cfg, src, settings):
             else:
                 if fixed_commit is not None:
                     commit = fixed_commit
+            missing_commit = False
+            try:
+                subprocess.check_call(
+                    ["git", "cat-file", "-e", commit + "^{commit}"],
+                    cwd=src.source_dir,
+                )
+            except subprocess.CalledProcessError:
+                missing_commit = True
+            if missing_commit:
+                raise RuntimeError(
+                    "git commit '{}' was not found for source '{}'".format(commit, src.name)
+                )
             if init or settings.reset != ResetMode.NONE:
                 subprocess.check_call(
                     ["git", "checkout", "--no-track", "-B", source["branch"], commit],