$ git clone -n https://src.fedoraproject.org/rpms/mingw-srvany.git /var/lib/mock/f45-build-18836-530/root/chroot_tmpdir/scmroot/mingw-srvany
Cloning into '/var/lib/mock/f45-build-18836-530/root/chroot_tmpdir/scmroot/mingw-srvany'...
$ git fetch origin cf19931469525b1a42353adf554c9cbb49a081a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-srvany
 * [new ref]         cf19931469525b1a42353adf554c9cbb49a081a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf19931 Remove C++ compiler