$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-platform.git /var/lib/mock/f40-build-2250481-54055/root/chroot_tmpdir/scmroot/rust-cargo-platform
Cloning into '/var/lib/mock/f40-build-2250481-54055/root/chroot_tmpdir/scmroot/rust-cargo-platform'...
$ git fetch origin 36743e77a8bc46d31a7057b8584e4e5c094e8ec3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-platform
 * [new ref]         36743e77a8bc46d31a7057b8584e4e5c094e8ec3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36743e7 Update to version 0.1.6; Fixes RHBZ#2256111