The "merge" command:
Usage: fossil merge ?OPTIONS? ?VERSION?
The argument VERSION is a version that should be merged into the
current checkout. All changes from VERSION back to the nearest
common ancestor are merged. Except, if either of the --cherrypick or
--backout options are used only the changes associated with the
single check-in VERSION are merged. The --backout option causes
the changes associated with VERSION to be removed from the current
checkout rather than added.
If the VERSION argument is omitted, then Fossil attempts to find
a recent fork on the current branch to merge.
Only file content is merged. The result continues to use the
file and directory names from the current checkout even if those
names might have been changed in the branch being merged in.
--backout Do a reverse cherrypick merge against VERSION.
In other words, back out the changes that were
added by VERSION.
--baseline BASELINE Use BASELINE as the "pivot" of the merge instead
of the nearest common ancestor. This allows
a sequence of changes in a branch to be merged
without having to merge the entire branch.
--binary GLOBPATTERN Treat files that match GLOBPATTERN as binary
and do not try to merge parallel changes. This
option overrides the "binary-glob" setting.
--case-sensitive BOOL Override the case-sensitive setting. If false,
files whose names differ only in case are taken
to be the same file.
--cherrypick Do a cherrypick merge VERSION into the current
checkout. A cherrypick merge pulls in the changes
of the single check-in VERSION, rather than all
changes back to the nearest common ancestor.
-f|--force Force the merge even if it would be a no-op.
--force-missing Force the merge even if there is missing content.
--integrate Merged branch will be closed when committing.
-n|--dry-run If given, display instead of run actions
-v|--verbose Show additional details of the merge