$ git clone -n https://src.fedoraproject.org/rpms/mactelnet.git /var/lib/mock/f45-build-17909-505/root/chroot_tmpdir/scmroot/mactelnet
Cloning into '/var/lib/mock/f45-build-17909-505/root/chroot_tmpdir/scmroot/mactelnet'...
$ git fetch origin 01231a03be7182617c56eb65164b71f3a0c7dbbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mactelnet
 * [new ref]         01231a03be7182617c56eb65164b71f3a0c7dbbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01231a0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild