$ git clone -n https://src.fedoraproject.org/rpms/gqrx.git /var/lib/mock/f39-build-2422530-60579/root/chroot_tmpdir/scmroot/gqrx
Cloning into '/var/lib/mock/f39-build-2422530-60579/root/chroot_tmpdir/scmroot/gqrx'...
$ git fetch origin 71b678f4d8ffc59570899762b5c8526a5d782291:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gqrx
 * [new ref]         71b678f4d8ffc59570899762b5c8526a5d782291 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71b678f Rebuild (qt6)