$ git clone -n https://src.fedoraproject.org/rpms/tinygltf.git /var/lib/mock/f45-build-37151-711/root/chroot_tmpdir/scmroot/tinygltf
Cloning into '/var/lib/mock/f45-build-37151-711/root/chroot_tmpdir/scmroot/tinygltf'...
$ git fetch origin 315f0f83a7e4c169822273c6cc6fd8e7b83180a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tinygltf
 * [new ref]         315f0f83a7e4c169822273c6cc6fd8e7b83180a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 315f0f8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild