How to debug a failed git clone? about git HOT 4 CLOSED

(Disclaimer: I am not the author of this code, just somebody who tries to help. Take everything I say with a grain of salt)

Hm, looking at the mercurial source code, the + after the sha1 indicates that head in that case is either a workingctx or a memctx. My guess is on the former, but to be sure, could you add log(repr(head)) ?

Also, your repo has 1797 commits -- I wonder if 10cf14cad52b is the tip commit, resp. commit 1797?

Overall, one guess would be that the tip or working dir or so of the repository you are cloning in is not "clean". E.g. my very first idea was that perhaps there is an incomplete merge going on there (i.e. somebody forgot to "hg commit" after doing "hg merge"). But in a quick test, I couldn't replicate your error this way, though perhaps I just did not try hard enough. But perhaps you can inspect your hg repo a bit closer to see if that is the case?

from git.

Perhaps you can try this:

--- a/contrib/remote-helpers/git-remote-hg
+++ b/contrib/remote-helpers/git-remote-hg
@@ -297,7 +297,7 @@ def export_ref(repo, name, kind, head):
     tip = marks.get_tip(ename)

     # mercurial takes too much time checking this
-    if tip and tip == head.rev():
+    if tip and tip == head.rev() or not head.rev():
         # nothing to do
         return
     revs = xrange(tip, head.rev() + 1)

from git.

Also, you should probably log the name of the branch as well, so that you can check which is the desired tip of that branch.

from git.

I found the culprit, this script reproduces the issue:

(
hg init hgrepo &&
cd hgrepo &&

echo one >> content &&
hg add content &&
hg commit -m one &&

hg branch "foo bar" &&

echo two >> content &&
hg commit -m two &&

hg update default
) &&

git clone "hg::$PWD/hgrepo" gitrepo

So yeah, it was the working directory, because repo[None] returns that, and because the branch "foo" couldn't be found, and so the tip was determined to be None.

But it's already fixed:
82dec9b

from git.