$ git clone -n https://src.fedoraproject.org/rpms/rust-pulp.git /var/lib/mock/f45-build-44105-810/root/chroot_tmpdir/scmroot/rust-pulp
Cloning into '/var/lib/mock/f45-build-44105-810/root/chroot_tmpdir/scmroot/rust-pulp'...
$ git fetch origin 0fb3da0c279512a072a2aae330558eebc5c8818f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pulp
 * [new ref]         0fb3da0c279512a072a2aae330558eebc5c8818f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fb3da0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild