Hi.
I just downloaded and installed sourcetree (version 2.7.6 177) on my macOS (version 10.13.6). I've been using only git command line tools on Terminal and wanted to use sourcetree this time.
However, I found that pull/push takes forever and stops. Below is a screenshot of one of the examples.

Since the error message is not even shown, I typed the above command on Terminal. It threw me an error as below.
git: 'credential-sourcetree' is not a git command. See 'git --help'.
I tried to find any relevant queries regarding this error, but couldn't find one except for some similar cases.
Would you tell me what to try at this point? Please let me know if I miss anything. Thank you.