$ git clone -n https://src.fedoraproject.org/rpms/python-streamlink.git /var/lib/mock/f39-build-2012766-45809/root/chroot_tmpdir/scmroot/python-streamlink
Cloning into '/var/lib/mock/f39-build-2012766-45809/root/chroot_tmpdir/scmroot/python-streamlink'...
$ git fetch origin 1bcc06ea24c3bb1542f8c71cff765d1a3430a090:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-streamlink
 * [new ref]         1bcc06ea24c3bb1542f8c71cff765d1a3430a090 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1bcc06e Update to 6.4.2