$ git clone -n https://src.fedoraproject.org/rpms/mingw-qt5-qtserialport.git /var/lib/mock/f40-build-2703293-70792/root/chroot_tmpdir/scmroot/mingw-qt5-qtserialport
Cloning into '/var/lib/mock/f40-build-2703293-70792/root/chroot_tmpdir/scmroot/mingw-qt5-qtserialport'...
$ git fetch origin 601e57f0538ca4bf3d3eb3659ca841092c075547:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-qt5-qtserialport
 * [new ref]         601e57f0538ca4bf3d3eb3659ca841092c075547 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 601e57f Update to 5.15.12