$ git clone -n https://src.fedoraproject.org/rpms/mingw-nsis.git /var/lib/mock/f45-build-18608-524/root/chroot_tmpdir/scmroot/mingw-nsis
Cloning into '/var/lib/mock/f45-build-18608-524/root/chroot_tmpdir/scmroot/mingw-nsis'...
$ git fetch origin 58c25cf381aea14554ee4e3c2704e1425188e903:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-nsis
 * [new ref]         58c25cf381aea14554ee4e3c2704e1425188e903 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58c25cf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild