$ git clone -n https://src.fedoraproject.org/rpms/xfce4-power-manager.git /var/lib/mock/f41-build-side-1-2810789-32921/root/chroot_tmpdir/scmroot/xfce4-power-manager
Cloning into '/var/lib/mock/f41-build-side-1-2810789-32921/root/chroot_tmpdir/scmroot/xfce4-power-manager'...
$ git fetch origin 0e647dd8d14ddf17502e937112b464f5cab9462d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-power-manager
 * [new ref]         0e647dd8d14ddf17502e937112b464f5cab9462d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e647dd convert GPLv2+ license to SPDX