$ git clone -n https://src.fedoraproject.org/rpms/kf5-baloo.git /var/lib/mock/f38-build-729651-101821/root/chroot_tmpdir/scmroot/kf5-baloo
Cloning into '/var/lib/mock/f38-build-729651-101821/root/chroot_tmpdir/scmroot/kf5-baloo'...
$ git fetch origin c35eac32e7e6e443156d7964dae9084a106334fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-baloo
 * [new ref]         c35eac32e7e6e443156d7964dae9084a106334fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c35eac3 fix: backport patch from upstream to fix btrfs re-indexing