$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jackc-pgtype.git /var/lib/mock/f45-build-12089-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgtype
Cloning into '/var/lib/mock/f45-build-12089-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgtype'...
$ git fetch origin 64bbe4bd62f8c9f34cd2afa87d25b0dfead61aa2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jackc-pgtype
 * [new ref]         64bbe4bd62f8c9f34cd2afa87d25b0dfead61aa2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64bbe4b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild