$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtxmlpatterns.git /var/lib/mock/f40-build-2638010-66273/root/chroot_tmpdir/scmroot/qt5-qtxmlpatterns
Cloning into '/var/lib/mock/f40-build-2638010-66273/root/chroot_tmpdir/scmroot/qt5-qtxmlpatterns'...
$ git fetch origin eb7b45d4724499202ab71da83b522d362bfc8b16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtxmlpatterns
 * [new ref]         eb7b45d4724499202ab71da83b522d362bfc8b16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb7b45d 5.15.13