$ git clone -n https://src.fedoraproject.org/rpms/python-mathics-scanner.git /var/lib/mock/f45-build-31501-652/root/chroot_tmpdir/scmroot/python-mathics-scanner
Cloning into '/var/lib/mock/f45-build-31501-652/root/chroot_tmpdir/scmroot/python-mathics-scanner'...
$ git fetch origin 19b1af3234b2c89223a6ae1a47fed447b4dbfb38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mathics-scanner
 * [new ref]         19b1af3234b2c89223a6ae1a47fed447b4dbfb38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19b1af3 simplify .gitignore file