$ git clone -n https://src.fedoraproject.org/rpms/libslirp.git /var/lib/mock/f45-build-17028-495/root/chroot_tmpdir/scmroot/libslirp
Cloning into '/var/lib/mock/f45-build-17028-495/root/chroot_tmpdir/scmroot/libslirp'...
$ git fetch origin 7c835f83a26ceb606acb03eb46f4f4781ce8a3ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libslirp
 * [new ref]         7c835f83a26ceb606acb03eb46f4f4781ce8a3ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c835f8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild