$ git clone -n https://src.fedoraproject.org/rpms/rust-openpgp-cert-d.git /var/lib/mock/f40-build-2116110-50701/root/chroot_tmpdir/scmroot/rust-openpgp-cert-d
Cloning into '/var/lib/mock/f40-build-2116110-50701/root/chroot_tmpdir/scmroot/rust-openpgp-cert-d'...
$ git fetch origin 4969bd35d7b660709a29ea28037f35de8038450c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-openpgp-cert-d
 * [new ref]         4969bd35d7b660709a29ea28037f35de8038450c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4969bd3 Update to version 0.3.1; Fixes RHBZ#2253187