$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jackc-pgio.git /var/lib/mock/f45-build-12082-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgio
Cloning into '/var/lib/mock/f45-build-12082-437/root/chroot_tmpdir/scmroot/golang-github-jackc-pgio'...
$ git fetch origin 28d4aebd3ee9ad3cfc9de6c78276b3bd9edce009:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jackc-pgio
 * [new ref]         28d4aebd3ee9ad3cfc9de6c78276b3bd9edce009 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28d4aeb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild