$ git clone -n https://src.fedoraproject.org/rpms/procinfo-ng.git /var/lib/mock/f39-build-1511880-35550/root/chroot_tmpdir/scmroot/procinfo-ng
Cloning into '/var/lib/mock/f39-build-1511880-35550/root/chroot_tmpdir/scmroot/procinfo-ng'...
$ git fetch origin cf38e49165bfa0b32919710df25fe98bc9cf330c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/procinfo-ng
 * [new ref]         cf38e49165bfa0b32919710df25fe98bc9cf330c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf38e49 - Fix FTBFS rhbz#2113604