$ git clone -n https://src.fedoraproject.org/rpms/perl-Carp-Assert.git /var/lib/mock/f45-build-22209-590/root/chroot_tmpdir/scmroot/perl-Carp-Assert
Cloning into '/var/lib/mock/f45-build-22209-590/root/chroot_tmpdir/scmroot/perl-Carp-Assert'...
$ git fetch origin abb2b45c947427e75577530ab423b713bfa17b50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Carp-Assert
 * [new ref]         abb2b45c947427e75577530ab423b713bfa17b50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abb2b45 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild