$ git clone -n https://src.fedoraproject.org/rpms/rust-papergrid.git /var/lib/mock/f45-build-43732-805/root/chroot_tmpdir/scmroot/rust-papergrid
Cloning into '/var/lib/mock/f45-build-43732-805/root/chroot_tmpdir/scmroot/rust-papergrid'...
$ git fetch origin 6568866e84b9f6359edc07eef6410bd2deb73e3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-papergrid
 * [new ref]         6568866e84b9f6359edc07eef6410bd2deb73e3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6568866 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild