New empty branch appears to report

[dmitryuk]

Hello. I found a bug, that new empty not-merged-master branch appears in the changelog report
Steps to reproduce

git init
git checkout -b master
# commit 2 files to master
touch file1.txt file2.txt
git add file1.txt && git commit -m "test_file_1"
git add file2.txt && git commit -m "test_file_2"
# checkout new branch
git checkout -b KEY-5890
# Take difference between first commit to master and master branch
jira-changelog --range $(git show :/test_file_1 --format='format:%H' | head -n 1)...master

Result

Jira Tickets
---------------------
  * <Technical> - TITLE HERE
    [KEY-5890] LINK_HERE

[mrmeyers99]

This appears to happen because by default git log shows the tags and branches at each commit. If jira-changelog customized the git log format or if we could customize the --format parameter to remove the tags and branches, that would fix this issue.