$ git clone -n https://src.fedoraproject.org/rpms/player.git /var/lib/mock/f38-build-side-42-init-devel-953256-28781/root/chroot_tmpdir/scmroot/player
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-953256-28781/root/chroot_tmpdir/scmroot/player'...
$ git fetch origin 7d742083fa4fa96f1ed4f03518d8e8b680d78476:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/player
 * [new ref]         7d742083fa4fa96f1ed4f03518d8e8b680d78476 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d74208 Remove non-working Python 3 module (#2161923)