$ git clone -n https://src.fedoraproject.org/rpms/maui-mauikit-filebrowsing.git /var/lib/mock/f42-build-side-1-3505997-45995/root/chroot_tmpdir/scmroot/maui-mauikit-filebrowsing
Cloning into '/var/lib/mock/f42-build-side-1-3505997-45995/root/chroot_tmpdir/scmroot/maui-mauikit-filebrowsing'...
$ git fetch origin 3977102a05d8b166bf85aa9c30bfe6966718f846:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maui-mauikit-filebrowsing
 * [new ref]         3977102a05d8b166bf85aa9c30bfe6966718f846 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3977102 Rebuild for Qt Update