$ git clone -n https://src.fedoraproject.org/rpms/python-matplotlib.git /var/lib/mock/f38-build-side-42-init-devel-1035324-29746/root/chroot_tmpdir/scmroot/python-matplotlib
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1035324-29746/root/chroot_tmpdir/scmroot/python-matplotlib'...
$ git fetch origin 05ffcff315d55aecb2487d1a34b59fa6dd0148c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-matplotlib
 * [new ref]         05ffcff315d55aecb2487d1a34b59fa6dd0148c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05ffcff Update to latest version (#2220649)