$ git clone -n https://src.fedoraproject.org/rpms/rust-quinn-udp.git /var/lib/mock/f45-build-44168-811/root/chroot_tmpdir/scmroot/rust-quinn-udp
Cloning into '/var/lib/mock/f45-build-44168-811/root/chroot_tmpdir/scmroot/rust-quinn-udp'...
$ git fetch origin 53f924337f8d4eb55f269794886f81a6cb767094:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quinn-udp
 * [new ref]         53f924337f8d4eb55f269794886f81a6cb767094 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53f9243 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild