$ git clone -n https://src.fedoraproject.org/rpms/rust-psa-crypto.git /var/lib/mock/f40-build-2658544-66917/root/chroot_tmpdir/scmroot/rust-psa-crypto
Cloning into '/var/lib/mock/f40-build-2658544-66917/root/chroot_tmpdir/scmroot/rust-psa-crypto'...
$ git fetch origin 73a0355e7dbb93e5f02f9167072ae48a5df5f29c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-psa-crypto
 * [new ref]         73a0355e7dbb93e5f02f9167072ae48a5df5f29c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73a0355 0.12.0