$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtscxml.git /var/lib/mock/f40-build-800420-143529/root/chroot_tmpdir/scmroot/qt5-qtscxml
Cloning into '/var/lib/mock/f40-build-800420-143529/root/chroot_tmpdir/scmroot/qt5-qtscxml'...
$ git fetch origin 355341c1c372339d54db05de400a6c7fa0214670:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtscxml
 * [new ref]         355341c1c372339d54db05de400a6c7fa0214670 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 355341c 5.15.13