$ git clone -n https://src.fedoraproject.org/rpms/rust-spki0.7.git /var/lib/mock/f45-build-45115-821/root/chroot_tmpdir/scmroot/rust-spki0.7
Cloning into '/var/lib/mock/f45-build-45115-821/root/chroot_tmpdir/scmroot/rust-spki0.7'...
$ git fetch origin 0492dbb81ff4a6b505c9a8eb8c40efae495995f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-spki0.7
 * [new ref]         0492dbb81ff4a6b505c9a8eb8c40efae495995f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0492dbb Initial compat package