$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-config2.git /var/lib/mock/f40-build-2373379-60408/root/chroot_tmpdir/scmroot/rust-cargo-config2
Cloning into '/var/lib/mock/f40-build-2373379-60408/root/chroot_tmpdir/scmroot/rust-cargo-config2'...
$ git fetch origin f7a6be5fa742b4d0778cf76a7ec37a275a70a320:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-config2
 * [new ref]         f7a6be5fa742b4d0778cf76a7ec37a275a70a320 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7a6be5 Update to version 0.1.18; Fixes RHBZ#2260342