$ git clone -n https://src.fedoraproject.org/rpms/mingw-libidn.git /var/lib/mock/f45-build-18557-521/root/chroot_tmpdir/scmroot/mingw-libidn
Cloning into '/var/lib/mock/f45-build-18557-521/root/chroot_tmpdir/scmroot/mingw-libidn'...
$ git fetch origin bdab2f2d26decfbcfa6aa22f2138f3b5583c4413:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-libidn
 * [new ref]         bdab2f2d26decfbcfa6aa22f2138f3b5583c4413 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdab2f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild