$ git clone -n https://src.fedoraproject.org/rpms/liblastfm.git /var/lib/mock/f45-build-16478-486/root/chroot_tmpdir/scmroot/liblastfm
Cloning into '/var/lib/mock/f45-build-16478-486/root/chroot_tmpdir/scmroot/liblastfm'...
$ git fetch origin 654cb34923a7fde7ffe1ac47a734b82e9675dd6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liblastfm
 * [new ref]         654cb34923a7fde7ffe1ac47a734b82e9675dd6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 654cb34 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild