$ git clone -n https://src.fedoraproject.org/rpms/pyosmium.git /var/lib/mock/f38-build-side-42-init-devel-774542-27772/root/chroot_tmpdir/scmroot/pyosmium
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-774542-27772/root/chroot_tmpdir/scmroot/pyosmium'...
$ git fetch origin ad803bdad84c0b87819bcc99a0abfa8d6d1e36f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pyosmium
 * [new ref]         ad803bdad84c0b87819bcc99a0abfa8d6d1e36f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad803bd Update to 3.6.0 upstream release