$ git clone -n https://src.fedoraproject.org/rpms/rust-indextree-macros.git /var/lib/mock/f41-build-side-1-2992599-36014/root/chroot_tmpdir/scmroot/rust-indextree-macros
Cloning into '/var/lib/mock/f41-build-side-1-2992599-36014/root/chroot_tmpdir/scmroot/rust-indextree-macros'...
$ git fetch origin 9ec3ea8d4b7b3950f720db28600181965733b370:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-indextree-macros
 * [new ref]         9ec3ea8d4b7b3950f720db28600181965733b370 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ec3ea8 Initial package (rhbz#2307616)