sync: introduce --force-checkoutv2.43

In some cases (e.g. in a CI system), it's desirable to be able to
instruct repo to force checkout. This flag passes --force flag to `git
checkout` operations.

Bug: b/327624021
Change-Id: I579edda546fb8147c4e1a267e2605fcf6e597421
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/411518
Commit-Queue: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>
Reviewed-by: George Engelbrecht <engeg@google.com>
Tested-by: Josip Sokcevic <sokcevic@google.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/project.py b/project.py
index 40ca116d..2ba2b766 100644
--- a/project.py
+++ b/project.py
@@ -1515,6 +1515,7 @@ class Project:
         self,
         syncbuf,
         force_sync=False,
+        force_checkout=False,
         submodules=False,
         errors=None,
         verbose=False,
@@ -1602,7 +1603,7 @@ class Project:
                     syncbuf.info(self, "discarding %d commits", len(lost))
 
             try:
-                self._Checkout(revid, quiet=True)
+                self._Checkout(revid, force_checkout=force_checkout, quiet=True)
                 if submodules:
                     self._SyncSubmodules(quiet=True)
             except GitError as e:
@@ -2857,10 +2858,12 @@ class Project:
         except OSError:
             return False
 
-    def _Checkout(self, rev, quiet=False):
+    def _Checkout(self, rev, force_checkout=False, quiet=False):
         cmd = ["checkout"]
         if quiet:
             cmd.append("-q")
+        if force_checkout:
+            cmd.append("-f")
         cmd.append(rev)
         cmd.append("--")
         if GitCommand(self, cmd).Wait() != 0: