$ git clone -n https://src.fedoraproject.org/rpms/kf5-kpackage.git /var/lib/mock/f40-build-787363-134746/root/chroot_tmpdir/scmroot/kf5-kpackage
Cloning into '/var/lib/mock/f40-build-787363-134746/root/chroot_tmpdir/scmroot/kf5-kpackage'...
$ git fetch origin d475a56536acf077cffeba3f8ce082744bf3db8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kpackage
 * [new ref]         d475a56536acf077cffeba3f8ce082744bf3db8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d475a56 5.115.0