$ git clone -n https://src.fedoraproject.org/rpms/slop.git /var/lib/mock/f41-build-side-1-2669973-28990/root/chroot_tmpdir/scmroot/slop
Cloning into '/var/lib/mock/f41-build-side-1-2669973-28990/root/chroot_tmpdir/scmroot/slop'...
$ git fetch origin 71b8aa5d5bc1e9b9ff19d3be2f5eecd08c2fae95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/slop
 * [new ref]         71b8aa5d5bc1e9b9ff19d3be2f5eecd08c2fae95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71b8aa5 convert GPLv3 license to SPDX