$ git clone -n https://src.fedoraproject.org/rpms/libsonata.git /var/lib/mock/f39-build-1869176-42620/root/chroot_tmpdir/scmroot/libsonata
Cloning into '/var/lib/mock/f39-build-1869176-42620/root/chroot_tmpdir/scmroot/libsonata'...
$ git fetch origin cdd75105146e8b384762c42b4c869bd345676c5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsonata
 * [new ref]         cdd75105146e8b384762c42b4c869bd345676c5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cdd7510 Stop building for i686