$ git clone -n https://src.fedoraproject.org/rpms/matio.git /var/lib/mock/f45-build-18115-508/root/chroot_tmpdir/scmroot/matio
Cloning into '/var/lib/mock/f45-build-18115-508/root/chroot_tmpdir/scmroot/matio'...
$ git fetch origin 2f2456aacf46fc71241fe4012e77efe24b92c173:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matio
 * [new ref]         2f2456aacf46fc71241fe4012e77efe24b92c173 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f2456a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild