$ git clone -n https://src.fedoraproject.org/rpms/golang-github-openapi-spec.git /var/lib/mock/f45-build-12311-440/root/chroot_tmpdir/scmroot/golang-github-openapi-spec
Cloning into '/var/lib/mock/f45-build-12311-440/root/chroot_tmpdir/scmroot/golang-github-openapi-spec'...
$ git fetch origin ec671a259237fe753c59fdca79ddaca092ad9d57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-openapi-spec
 * [new ref]         ec671a259237fe753c59fdca79ddaca092ad9d57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec671a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild