Allow case-insensitive state revert HEAD.

internal/runners/revert/revert.go

@@ -1,6 +1,8 @@
 package revert
 
 import (
+	"strings"
+
 	"github.com/ActiveState/cli/internal/analytics"
 	"github.com/ActiveState/cli/internal/errs"
 	"github.com/ActiveState/cli/internal/locale"
@@ -63,14 +65,14 @@ func (r *Revert) Run(params *Params) (rerr error) {
 	}
 
 	commitID := params.CommitID
-	if !strfmt.IsUUID(commitID) && commitID != headCommitID {
+	if !strfmt.IsUUID(commitID) && !strings.EqualFold(commitID, headCommitID) {
 		return locale.NewInputError("err_invalid_commit_id", "Invalid commit ID")
 	}
 	latestCommit, err := commitmediator.Get(r.project)
 	if err != nil {
 		return errs.Wrap(err, "Unable to get local commit")
 	}
-	if commitID == headCommitID {
+	if strings.EqualFold(commitID, headCommitID) {
 		commitID = latestCommit.String()
 	}