$ git clone -n https://src.fedoraproject.org/rpms/rust-routinator.git /var/lib/mock/f42-build-side-1-3522724-46188/root/chroot_tmpdir/scmroot/rust-routinator
Cloning into '/var/lib/mock/f42-build-side-1-3522724-46188/root/chroot_tmpdir/scmroot/rust-routinator'...
$ git fetch origin a93e9fbf3fc69a88eb440205df7fe37e6223b718:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-routinator
 * [new ref]         a93e9fbf3fc69a88eb440205df7fe37e6223b718 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a93e9fb Update to 0.14.2; Fixes: RHBZ#2349822