$ git clone -n https://src.fedoraproject.org/rpms/kf5-kmbox.git /var/lib/mock/f40-build-2237341-53539/root/chroot_tmpdir/scmroot/kf5-kmbox
Cloning into '/var/lib/mock/f40-build-2237341-53539/root/chroot_tmpdir/scmroot/kf5-kmbox'...
$ git fetch origin c7fbce5fceff4b2dbdc2b6f42a72e05486cf13a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kmbox
 * [new ref]         c7fbce5fceff4b2dbdc2b6f42a72e05486cf13a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7fbce5 Updated spec with SPDX Licensing