$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtserialport.git /var/lib/mock/f39-build-1652094-40496/root/chroot_tmpdir/scmroot/qt6-qtserialport
Cloning into '/var/lib/mock/f39-build-1652094-40496/root/chroot_tmpdir/scmroot/qt6-qtserialport'...
$ git fetch origin 374c724c19da8fd0b6426467c82c2e3df2606a54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtserialport
 * [new ref]         374c724c19da8fd0b6426467c82c2e3df2606a54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 374c724 6.6.0