$ git clone -n https://src.fedoraproject.org/rpms/setBfree.git /var/lib/mock/f45-build-35778-699/root/chroot_tmpdir/scmroot/setBfree
Cloning into '/var/lib/mock/f45-build-35778-699/root/chroot_tmpdir/scmroot/setBfree'...
$ git fetch origin 0db610f330398011d4c0fc86264879cd746e8481:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/setBfree
 * [new ref]         0db610f330398011d4c0fc86264879cd746e8481 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0db610f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild