$ git clone -n https://src.fedoraproject.org/rpms/magicmirror-module-singlestock.git /var/lib/mock/f45-build-17949-506/root/chroot_tmpdir/scmroot/magicmirror-module-singlestock
Cloning into '/var/lib/mock/f45-build-17949-506/root/chroot_tmpdir/scmroot/magicmirror-module-singlestock'...
$ git fetch origin 6547797f32a12b7827b25e25f9ca2c3f71289065:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/magicmirror-module-singlestock
 * [new ref]         6547797f32a12b7827b25e25f9ca2c3f71289065 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6547797 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild