$ git clone -n https://src.fedoraproject.org/rpms/rust-fedora-update-feedback.git /var/lib/mock/f39-build-1869728-42635/root/chroot_tmpdir/scmroot/rust-fedora-update-feedback
Cloning into '/var/lib/mock/f39-build-1869728-42635/root/chroot_tmpdir/scmroot/rust-fedora-update-feedback'...
$ git fetch origin 5079352f46a577f27aaae06cb23cd4a5a396ed52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fedora-update-feedback
 * [new ref]         5079352f46a577f27aaae06cb23cd4a5a396ed52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5079352 Update to version 2.1.3; Fixes RHBZ#2249695