$ git clone -n https://src.fedoraproject.org/rpms/rust-sequoia-openpgp-mt.git /var/lib/mock/f42-build-side-1-3510447-46033/root/chroot_tmpdir/scmroot/rust-sequoia-openpgp-mt
Cloning into '/var/lib/mock/f42-build-side-1-3510447-46033/root/chroot_tmpdir/scmroot/rust-sequoia-openpgp-mt'...
$ git fetch origin d3cd34066ee95f600995658c72333c9956173e28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sequoia-openpgp-mt
 * [new ref]         d3cd34066ee95f600995658c72333c9956173e28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3cd340 Update to version 0.2.0; Fixes RHBZ#2349877