$ git clone -n https://src.fedoraproject.org/rpms/pdfarranger.git /var/lib/mock/f41-build-side-2-python-2688603-30183/root/chroot_tmpdir/scmroot/pdfarranger
Cloning into '/var/lib/mock/f41-build-side-2-python-2688603-30183/root/chroot_tmpdir/scmroot/pdfarranger'...
$ git fetch origin dc0aa400fa25724bdcf3dbd63b559e0b18b94d55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pdfarranger
 * [new ref]         dc0aa400fa25724bdcf3dbd63b559e0b18b94d55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc0aa40 convert GPLv3 license to SPDX