$ git clone -n https://src.fedoraproject.org/rpms/rust-ouroboros_macro0.15.git /var/lib/mock/f38-build-side-43-rust-devel-1411815-31436/root/chroot_tmpdir/scmroot/rust-ouroboros_macro0.15
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411815-31436/root/chroot_tmpdir/scmroot/rust-ouroboros_macro0.15'...
$ git fetch origin c1d9ab4284b471c4b8a3309e0774ec74ffbd3192:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ouroboros_macro0.15
 * [new ref]         c1d9ab4284b471c4b8a3309e0774ec74ffbd3192 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1d9ab4 Initial import (ouroboros_macro 0.15 compat package)