$ git clone -n https://src.fedoraproject.org/rpms/rust-smol_str0.1.git /var/lib/mock/f40-build-2170431-51020/root/chroot_tmpdir/scmroot/rust-smol_str0.1
Cloning into '/var/lib/mock/f40-build-2170431-51020/root/chroot_tmpdir/scmroot/rust-smol_str0.1'...
$ git fetch origin 3ea69aa5433039b85907bbaa327ab2c98566e180:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-smol_str0.1
 * [new ref]         3ea69aa5433039b85907bbaa327ab2c98566e180 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ea69aa Initial import (smol_str 0.1 compat package)