$ git clone -n https://src.fedoraproject.org/rpms/efibootmgr.git /var/lib/mock/f45-build-7963-371/root/chroot_tmpdir/scmroot/efibootmgr
Cloning into '/var/lib/mock/f45-build-7963-371/root/chroot_tmpdir/scmroot/efibootmgr'...
$ git fetch origin b4be1eef7cdd48ed0435364ef63fc773ff71889b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/efibootmgr
 * [new ref]         b4be1eef7cdd48ed0435364ef63fc773ff71889b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4be1ee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild