$ git clone -n https://src.fedoraproject.org/rpms/golang-github-multiformats-multibase.git /var/lib/mock/f45-build-12296-440/root/chroot_tmpdir/scmroot/golang-github-multiformats-multibase
Cloning into '/var/lib/mock/f45-build-12296-440/root/chroot_tmpdir/scmroot/golang-github-multiformats-multibase'...
$ git fetch origin af1c57b96ac09dcb4acc6ccc730aa42f45177f4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-multiformats-multibase
 * [new ref]         af1c57b96ac09dcb4acc6ccc730aa42f45177f4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af1c57b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild