$ git clone -n https://src.fedoraproject.org/rpms/rust-p384.git /var/lib/mock/f38-build-side-43-rust-devel-1416537-31457/root/chroot_tmpdir/scmroot/rust-p384
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416537-31457/root/chroot_tmpdir/scmroot/rust-p384'...
$ git fetch origin e07548050bce1ba0b9707d5e2963ade8140fe35e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-p384
 * [new ref]         e07548050bce1ba0b9707d5e2963ade8140fe35e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e075480 Initial import (#2213268)