$ git clone -n https://src.fedoraproject.org/rpms/plasma-bigscreen.git /var/lib/mock/f39-build-2429272-60579/root/chroot_tmpdir/scmroot/plasma-bigscreen
Cloning into '/var/lib/mock/f39-build-2429272-60579/root/chroot_tmpdir/scmroot/plasma-bigscreen'...
$ git fetch origin 0f5f5b513f406b9d9ccd4edd04bb6c7e92619184:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-bigscreen
 * [new ref]         0f5f5b513f406b9d9ccd4edd04bb6c7e92619184 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f5f5b5 5.27.10