$ git clone -n https://src.fedoraproject.org/rpms/rust-darling_macro0.14.git /var/lib/mock/f38-build-side-43-rust-devel-1411670-31436/root/chroot_tmpdir/scmroot/rust-darling_macro0.14
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411670-31436/root/chroot_tmpdir/scmroot/rust-darling_macro0.14'...
$ git fetch origin 4689c719fa224f63b2095d7ab9cbe1142639098b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-darling_macro0.14
 * [new ref]         4689c719fa224f63b2095d7ab9cbe1142639098b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4689c71 Initial import (darling_macro 0.14 compat package)