$ git clone -n https://src.fedoraproject.org/rpms/qt5ct.git /var/lib/mock/f41-build-811765-147521/root/chroot_tmpdir/scmroot/qt5ct
Cloning into '/var/lib/mock/f41-build-811765-147521/root/chroot_tmpdir/scmroot/qt5ct'...
$ git fetch origin fb5fc305c54aa15bf937ebb3e7e23b7892bb8284:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5ct
 * [new ref]         fb5fc305c54aa15bf937ebb3e7e23b7892bb8284 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb5fc30 Rebuild (qt5)