$ git clone -n https://src.fedoraproject.org/rpms/gdu.git /var/lib/mock/f45-build-9729-408/root/chroot_tmpdir/scmroot/gdu
Cloning into '/var/lib/mock/f45-build-9729-408/root/chroot_tmpdir/scmroot/gdu'...
$ git fetch origin 5c4c9c3e751494464ad0bf085fe2dda3649bad03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gdu
 * [new ref]         5c4c9c3e751494464ad0bf085fe2dda3649bad03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c4c9c3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild