$ git clone -n https://src.fedoraproject.org/rpms/mingw-libunistring.git /var/lib/mock/f45-build-18590-523/root/chroot_tmpdir/scmroot/mingw-libunistring
Cloning into '/var/lib/mock/f45-build-18590-523/root/chroot_tmpdir/scmroot/mingw-libunistring'...
$ git fetch origin af45184365a701a14fd6d2185e04de14afaab8fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-libunistring
 * [new ref]         af45184365a701a14fd6d2185e04de14afaab8fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af45184 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild