$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcmutils.git /var/lib/mock/f45-build-14824-464/root/chroot_tmpdir/scmroot/kf5-kcmutils
Cloning into '/var/lib/mock/f45-build-14824-464/root/chroot_tmpdir/scmroot/kf5-kcmutils'...
$ git fetch origin f29c5aadf0adadb8f99bd3c62fe83499425e140a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcmutils
 * [new ref]         f29c5aadf0adadb8f99bd3c62fe83499425e140a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f29c5aa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild