$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtserialbus.git /var/lib/mock/f38-build-711673-94096/root/chroot_tmpdir/scmroot/qt5-qtserialbus
Cloning into '/var/lib/mock/f38-build-711673-94096/root/chroot_tmpdir/scmroot/qt5-qtserialbus'...
$ git fetch origin d80ee9bea181704aa791fca147f7fa8085f81d96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtserialbus
 * [new ref]         d80ee9bea181704aa791fca147f7fa8085f81d96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d80ee9b 5.15.9