$ git clone -n https://src.fedoraproject.org/rpms/maven.git /var/lib/mock/f45-build-53035-917/root/chroot_tmpdir/scmroot/maven
Cloning into '/var/lib/mock/f45-build-53035-917/root/chroot_tmpdir/scmroot/maven'...
$ git fetch origin b06cb898cf311d92d2545593ef22c16896d147cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven
 * [new ref]         b06cb898cf311d92d2545593ef22c16896d147cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b06cb89 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild