$ git clone -n https://src.fedoraproject.org/rpms/python-streamlink.git /var/lib/mock/f39-build-1537895-36388/root/chroot_tmpdir/scmroot/python-streamlink
Cloning into '/var/lib/mock/f39-build-1537895-36388/root/chroot_tmpdir/scmroot/python-streamlink'...
$ git fetch origin 1aa12aa7a1d8ebc6cc405a2c5397dc9827a96760:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-streamlink
 * [new ref]         1aa12aa7a1d8ebc6cc405a2c5397dc9827a96760 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1aa12aa Update to 6.2.1