$ git clone -n https://src.fedoraproject.org/rpms/layer-shell-qt.git /var/lib/mock/f41-build-851022-165853/root/chroot_tmpdir/scmroot/layer-shell-qt
Cloning into '/var/lib/mock/f41-build-851022-165853/root/chroot_tmpdir/scmroot/layer-shell-qt'...
$ git fetch origin de94d1f0b544993fb49b0809fa5d2cf68edfd99d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/layer-shell-qt
 * [new ref]         de94d1f0b544993fb49b0809fa5d2cf68edfd99d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de94d1f 6.1.90