$ git clone -n http://git.inferitos.ru/rpms/qt5-qtbase /var/lib/mock/inferit-8_8-bootstrap-build-28595-48386/root/chroot_tmpdir/scmroot/qt5-qtbase
Cloning into '/var/lib/mock/inferit-8_8-bootstrap-build-28595-48386/root/chroot_tmpdir/scmroot/qt5-qtbase'...
$ git fetch origin changed/i8c/qt5-qtbase-5.15.3-5.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/qt5-qtbase
 * [new tag]         changed/i8c/qt5-qtbase-5.15.3-5.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0fbe79 import qt5-qtbase-5.15.3-5.el8