Trying to check out a bit bucket repository to my local laptop using Sourcetree

[dlybarge@chamberlain]

I am unable to check out a repository for my Bitbucket page to my laptop because I'm told the URL for the remote repository is not valid.

This is the error I'm getting when I use Sourcetree:

Command: git -c diff.mnemonicprefix=false -c core.quotepath=false --no-optional-locks ls-remote https://bitbucket.chamberlain.com/scm/tc/liftmaster.git

Output:
Error: fatal: Authentication failed for 'https://bitbucket.chamberlain.com/scm/tc/liftmaster.git/'

I'm trying to update two projects in Madcap Flare and need to be able to check the files in and out.

I've just downloaded and registered Sourcetree. I simply want to correct the glitches. I am a new user who has previously worked with SubVersion.

Dan Lybarger