$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jackc-pgx.git /var/lib/mock/f45-build-12090-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgx
Cloning into '/var/lib/mock/f45-build-12090-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgx'...
$ git fetch origin 99ce26908bf85ba90afc04b25ee7ab6382714a30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jackc-pgx
 * [new ref]         99ce26908bf85ba90afc04b25ee7ab6382714a30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99ce269 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild