$ git clone -n https://src.fedoraproject.org/rpms/efivar.git /var/lib/mock/f45-build-7978-372/root/chroot_tmpdir/scmroot/efivar
Cloning into '/var/lib/mock/f45-build-7978-372/root/chroot_tmpdir/scmroot/efivar'...
$ git fetch origin 2799a0488de229c0864c5bf3a3deff2a295ddc63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/efivar
 * [new ref]         2799a0488de229c0864c5bf3a3deff2a295ddc63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2799a04 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild