* A complete 40 byte or abbreviated commit SHA-1 in hex.
* Any valid Git SHA-1 expression that resolves to a commit. See
- ``SPECIFYING REVISIONS'' in linkgit:git-rev-parse[1] for details.
+ ``SPECIFYING REVISIONS'' in linkgit:gitrevisions[1] for details.
The special case of restarting an incremental import from the
current branch value should be written as: