unsigned, with 'verbatim', they will be silently exported
and with 'warn', they will be exported, but you will see a warning.
+--export-marks=<file>::
+ Dumps the internal marks table to <file> when complete.
+ Marks are written one per line as `:markid SHA-1`. Only marks
+ for revisions are dumped; marks for blobs are ignored.
+ Backends can use this file to validate imports after they
+ have been completed, or to save the marks table across
+ incremental runs. As <file> is only opened and truncated
+ at completion, the same path can also be safely given to
+ \--import-marks.
+
+--import-marks=<file>::
+ Before processing any input, load the marks specified in
+ <file>. The input file must exist, must be readable, and
+ must use the same format as produced by \--export-marks.
++
+Any commits that have already been marked will not be exported again.
+If the backend uses a similar \--import-marks file, this allows for
+incremental bidirectional exporting of the repository by keeping the
+marks the same across runs.
+
EXAMPLES
--------