$ git clone -n https://src.fedoraproject.org/rpms/rust-gl_generator.git /var/lib/mock/f45-build-42066-788/root/chroot_tmpdir/scmroot/rust-gl_generator
Cloning into '/var/lib/mock/f45-build-42066-788/root/chroot_tmpdir/scmroot/rust-gl_generator'...
$ git fetch origin b898fc14cbdc4804394f0f159855053ab722e72a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gl_generator
 * [new ref]         b898fc14cbdc4804394f0f159855053ab722e72a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b898fc1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild