$ git clone -n https://src.fedoraproject.org/rpms/perl-LWP-Online.git /var/lib/mock/f45-build-24341-603/root/chroot_tmpdir/scmroot/perl-LWP-Online
Cloning into '/var/lib/mock/f45-build-24341-603/root/chroot_tmpdir/scmroot/perl-LWP-Online'...
$ git fetch origin ea9a2fc076fcc1750de3c28696ac155fdd5340c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-LWP-Online
 * [new ref]         ea9a2fc076fcc1750de3c28696ac155fdd5340c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea9a2fc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild