$ git clone -n https://src.fedoraproject.org/rpms/CuraEngine.git /var/lib/mock/f39-build-1777532-41528/root/chroot_tmpdir/scmroot/CuraEngine
Cloning into '/var/lib/mock/f39-build-1777532-41528/root/chroot_tmpdir/scmroot/CuraEngine'...
$ git fetch origin dea253a8e80f369a4c730b0ff2c866a44a41b24b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/CuraEngine
 * [new ref]         dea253a8e80f369a4c730b0ff2c866a44a41b24b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dea253a Ensure stb_image contains the latest CVE patches