$ git clone -n https://src.fedoraproject.org/rpms/dhall-json.git /var/lib/mock/f39-build-2444208-61041/root/chroot_tmpdir/scmroot/dhall-json
Cloning into '/var/lib/mock/f39-build-2444208-61041/root/chroot_tmpdir/scmroot/dhall-json'...
$ git fetch origin 2d3c8726aebfd587db503616a15968b6cc8b6052:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhall-json
 * [new ref]         2d3c8726aebfd587db503616a15968b6cc8b6052 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d3c872 bump release