$ git clone -n https://src.fedoraproject.org/rpms/mingw-g2clib.git /var/lib/mock/f45-build-18447-516/root/chroot_tmpdir/scmroot/mingw-g2clib
Cloning into '/var/lib/mock/f45-build-18447-516/root/chroot_tmpdir/scmroot/mingw-g2clib'...
$ git fetch origin 84fda2375f884bd0fc2d839c6efd2d36d36c8a02:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-g2clib
 * [new ref]         84fda2375f884bd0fc2d839c6efd2d36d36c8a02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84fda23 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild