1 files changed, 9 insertions, 8 deletions

diff --git a/project.py b/project.py
index 9ff9df0b..5b26b64c 100644
--- a/project.py
+++ b/project.py
@@ -520,14 +520,7 @@ class Project(object):
     self.name = name
     self.remote = remote
     self.UpdatePaths(relpath, worktree, gitdir, objdir)
-    self.revisionExpr = revisionExpr
-
-    if revisionId is None \
-            and revisionExpr \
-            and IsId(revisionExpr):
-      self.revisionId = revisionExpr
-    else:
-      self.revisionId = revisionId
+    self.SetRevision(revisionExpr, revisionId=revisionId)
 
     self.rebase = rebase
     self.groups = groups
@@ -557,6 +550,14 @@ class Project(object):
     # project containing repo hooks.
     self.enabled_repo_hooks = []
 
+  def SetRevision(self, revisionExpr, revisionId=None):
+    """Set revisionId based on revision expression and id"""
+    self.revisionExpr = revisionExpr
+    if revisionId is None and revisionExpr and IsId(revisionExpr):
+      self.revisionId = self.revisionExpr
+    else:
+      self.revisionId = revisionId
+
   def UpdatePaths(self, relpath, worktree, gitdir, objdir):
     """Update paths used by this project"""
     self.gitdir = gitdir.replace('\\', '/')