--- a/hgext/remotefilelog/constants.py	Sun Oct 06 09:45:02 2019 -0400
+++ b/hgext/remotefilelog/constants.py	Sun Oct 06 09:48:39 2019 -0400
@@ -4,40 +4,40 @@
 
 from mercurial.i18n import _
 
-NETWORK_CAP_LEGACY_SSH_GETFILES = 'exp-remotefilelog-ssh-getfiles-1'
+NETWORK_CAP_LEGACY_SSH_GETFILES = b'exp-remotefilelog-ssh-getfiles-1'
 
-SHALLOWREPO_REQUIREMENT = "exp-remotefilelog-repo-req-1"
+SHALLOWREPO_REQUIREMENT = b"exp-remotefilelog-repo-req-1"
 
-BUNDLE2_CAPABLITY = "exp-remotefilelog-b2cap-1"
+BUNDLE2_CAPABLITY = b"exp-remotefilelog-b2cap-1"
 
-FILENAMESTRUCT = '!H'
+FILENAMESTRUCT = b'!H'
 FILENAMESIZE = struct.calcsize(FILENAMESTRUCT)
 
 NODESIZE = 20
-PACKREQUESTCOUNTSTRUCT = '!I'
+PACKREQUESTCOUNTSTRUCT = b'!I'
 
-NODECOUNTSTRUCT = '!I'
+NODECOUNTSTRUCT = b'!I'
 NODECOUNTSIZE = struct.calcsize(NODECOUNTSTRUCT)
 
-PATHCOUNTSTRUCT = '!I'
+PATHCOUNTSTRUCT = b'!I'
 PATHCOUNTSIZE = struct.calcsize(PATHCOUNTSTRUCT)
 
-FILEPACK_CATEGORY = ""
-TREEPACK_CATEGORY = "manifests"
+FILEPACK_CATEGORY = b""
+TREEPACK_CATEGORY = b"manifests"
 
 ALL_CATEGORIES = [FILEPACK_CATEGORY, TREEPACK_CATEGORY]
 
 # revision metadata keys. must be a single character.
-METAKEYFLAG = 'f'  # revlog flag
-METAKEYSIZE = 's'  # full rawtext size
+METAKEYFLAG = b'f'  # revlog flag
+METAKEYSIZE = b's'  # full rawtext size
 
 
 def getunits(category):
     if category == FILEPACK_CATEGORY:
-        return _("files")
+        return _(b"files")
     if category == TREEPACK_CATEGORY:
-        return _("trees")
+        return _(b"trees")
 
 
 # Repack options passed to ``markledger``.
-OPTION_PACKSONLY = 'packsonly'
+OPTION_PACKSONLY = b'packsonly'