$ git clone -n https://src.fedoraproject.org/rpms/libgadu.git /var/lib/mock/f45-build-16207-483/root/chroot_tmpdir/scmroot/libgadu
Cloning into '/var/lib/mock/f45-build-16207-483/root/chroot_tmpdir/scmroot/libgadu'...
$ git fetch origin 9416c4e611f88fbaf9b0a14db132815b5691c10d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgadu
 * [new ref]         9416c4e611f88fbaf9b0a14db132815b5691c10d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9416c4e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild