$ git clone -n https://src.fedoraproject.org/rpms/rust-peg-macros0.6.git /var/lib/mock/f38-build-side-43-rust-devel-1419237-31459/root/chroot_tmpdir/scmroot/rust-peg-macros0.6
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1419237-31459/root/chroot_tmpdir/scmroot/rust-peg-macros0.6'...
$ git fetch origin 5ef5d9d0d0542824449c9af55e23da59433d877f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-peg-macros0.6
 * [new ref]         5ef5d9d0d0542824449c9af55e23da59433d877f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ef5d9d Initial import (peg-macros 0.6 compat package)