$ git clone -n https://src.fedoraproject.org/rpms/golang-github-graylog2-gelf.git /var/lib/mock/f38-build-side-42-init-devel-652398-26502/root/chroot_tmpdir/scmroot/golang-github-graylog2-gelf
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-652398-26502/root/chroot_tmpdir/scmroot/golang-github-graylog2-gelf'...
$ git fetch origin 9514c3e6af68cbe562294566b6c1d1829706db24:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-graylog2-gelf
 * [new ref]         9514c3e6af68cbe562294566b6c1d1829706db24 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9514c3e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild