$ git clone -n https://src.fedoraproject.org/rpms/player.git /var/lib/mock/f41-build-837321-159020/root/chroot_tmpdir/scmroot/player
Cloning into '/var/lib/mock/f41-build-837321-159020/root/chroot_tmpdir/scmroot/player'...
$ git fetch origin 254b9a26d3f138f1310bc4f4f91a104adc16fc6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/player
 * [new ref]         254b9a26d3f138f1310bc4f4f91a104adc16fc6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 254b9a2 Rebuild for opencv 4.10.0