$ git clone -n https://src.fedoraproject.org/rpms/appliance-tools.git /var/lib/mock/f41-build-side-1-2631753-25734/root/chroot_tmpdir/scmroot/appliance-tools
Cloning into '/var/lib/mock/f41-build-side-1-2631753-25734/root/chroot_tmpdir/scmroot/appliance-tools'...
$ git fetch origin fe85bd20b59b32c261b4c480baa756141d0afac0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/appliance-tools
 * [new ref]         fe85bd20b59b32c261b4c480baa756141d0afac0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe85bd2 convert GPLv2 license to SPDX