$ git clone -n https://src.fedoraproject.org/rpms/rust-darling_core0.14.git /var/lib/mock/f38-build-side-43-rust-devel-1411669-31436/root/chroot_tmpdir/scmroot/rust-darling_core0.14
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411669-31436/root/chroot_tmpdir/scmroot/rust-darling_core0.14'...
$ git fetch origin 0178412649d68b3c9b144b05eee13fca4574894b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-darling_core0.14
 * [new ref]         0178412649d68b3c9b144b05eee13fca4574894b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0178412 Initial import (darling_core 0.14 compat package)