$ git clone -n https://src.fedoraproject.org/rpms/libwhirlpool.git /var/lib/mock/f45-build-17255-497/root/chroot_tmpdir/scmroot/libwhirlpool
Cloning into '/var/lib/mock/f45-build-17255-497/root/chroot_tmpdir/scmroot/libwhirlpool'...
$ git fetch origin dc83720fcad5e18365f0dde32a3af1b68a29a415:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libwhirlpool
 * [new ref]         dc83720fcad5e18365f0dde32a3af1b68a29a415 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc83720 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild