$ git clone -n https://src.fedoraproject.org/rpms/rust-impl-more.git /var/lib/mock/f38-build-side-43-rust-devel-1422168-31465/root/chroot_tmpdir/scmroot/rust-impl-more
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1422168-31465/root/chroot_tmpdir/scmroot/rust-impl-more'...
$ git fetch origin 95e4b059fd8432966562f6b2e5436ea233204487:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-impl-more
 * [new ref]         95e4b059fd8432966562f6b2e5436ea233204487 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95e4b05 Initial import (#2236533)