$ git clone -n https://src.fedoraproject.org/rpms/perl-Carp.git /var/lib/mock/f45-build-22186-590/root/chroot_tmpdir/scmroot/perl-Carp
Cloning into '/var/lib/mock/f45-build-22186-590/root/chroot_tmpdir/scmroot/perl-Carp'...
$ git fetch origin 2ecfe4e4eab201e29a60352882c4e418c59fd437:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Carp
 * [new ref]         2ecfe4e4eab201e29a60352882c4e418c59fd437 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ecfe4e Increase release to favour standalone package