$ git clone -n https://src.fedoraproject.org/rpms/python-virt-firmware.git /var/lib/mock/f39-build-1620996-38708/root/chroot_tmpdir/scmroot/python-virt-firmware
Cloning into '/var/lib/mock/f39-build-1620996-38708/root/chroot_tmpdir/scmroot/python-virt-firmware'...
$ git fetch origin 63b3a65eb95d7f8f1e975663cd67f57145646953:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-virt-firmware
 * [new ref]         63b3a65eb95d7f8f1e975663cd67f57145646953 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63b3a65 clarify uki-direct dependency on systemd >= 254