$ git clone -n https://src.fedoraproject.org/rpms/libaec.git /var/lib/mock/f31-build-58138-28405/root/chroot_tmpdir/scmroot/libaec
Cloning into '/var/lib/mock/f31-build-58138-28405/root/chroot_tmpdir/scmroot/libaec'...
$ git reset --hard 8c6856d65cf6e6b75c65ca8b1d1ebabd8211fce9
HEAD is now at 8c6856d added forgotten tarball