* We need to compute if commit on either side of an reflog
* entry is reachable from the tip of the ref for all entries.
* Mark commits that are reachable from the tip down to the
- * time threashold first; we know a commit marked thusly is
+ * time threshold first; we know a commit marked thusly is
* reachable from the tip without running in_merge_bases()
* at all.
*/