$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtxmlpatterns.git /var/lib/mock/f40-build-2269697-54777/root/chroot_tmpdir/scmroot/qt5-qtxmlpatterns
Cloning into '/var/lib/mock/f40-build-2269697-54777/root/chroot_tmpdir/scmroot/qt5-qtxmlpatterns'...
$ git fetch origin f5fb052318a59a00e52ef0fea66788441e759385:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtxmlpatterns
 * [new ref]         f5fb052318a59a00e52ef0fea66788441e759385 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5fb052 5.15.12