$ git clone -n https://src.fedoraproject.org/rpms/python-flask-babel.git /var/lib/mock/f39-build-1731710-41251/root/chroot_tmpdir/scmroot/python-flask-babel
Cloning into '/var/lib/mock/f39-build-1731710-41251/root/chroot_tmpdir/scmroot/python-flask-babel'...
$ git fetch origin 0c93dd96dd4e38ab063079df1813caddedf1ada9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flask-babel
 * [new ref]         0c93dd96dd4e38ab063079df1813caddedf1ada9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c93dd9 Update to 3.1.0