$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtx11extras.git /var/lib/mock/f41-build-811762-147521/root/chroot_tmpdir/scmroot/qt5-qtx11extras
Cloning into '/var/lib/mock/f41-build-811762-147521/root/chroot_tmpdir/scmroot/qt5-qtx11extras'...
$ git fetch origin 68352fc77e36396ad6e2f2147b7af038604867fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtx11extras
 * [new ref]         68352fc77e36396ad6e2f2147b7af038604867fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68352fc 5.15.14