$ git clone -n https://src.fedoraproject.org/rpms/python3.9.git /var/lib/mock/f41-build-852182-166259/root/chroot_tmpdir/scmroot/python3.9
Cloning into '/var/lib/mock/f41-build-852182-166259/root/chroot_tmpdir/scmroot/python3.9'...
$ git fetch origin 2fef19cb00dac73c4b5bd2e61c55a7ec911283db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python3.9
 * [new ref]         2fef19cb00dac73c4b5bd2e61c55a7ec911283db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fef19c Fix ThreadedVSOCKSocketStreamTest