$ git clone -n https://src.fedoraproject.org/rpms/minicomputer.git /var/lib/mock/f45-build-18882-533/root/chroot_tmpdir/scmroot/minicomputer
Cloning into '/var/lib/mock/f45-build-18882-533/root/chroot_tmpdir/scmroot/minicomputer'...
$ git fetch origin e068f6d2a419dd16f01bb47766dc2aacafcd659b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/minicomputer
 * [new ref]         e068f6d2a419dd16f01bb47766dc2aacafcd659b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e068f6d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild