$ git clone -n https://src.fedoraproject.org/rpms/perl-App-cpm.git /var/lib/mock/f45-build-21724-587/root/chroot_tmpdir/scmroot/perl-App-cpm
Cloning into '/var/lib/mock/f45-build-21724-587/root/chroot_tmpdir/scmroot/perl-App-cpm'...
$ git fetch origin 1e33c966706a83fbff396594c9d14e53a46637a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-App-cpm
 * [new ref]         1e33c966706a83fbff396594c9d14e53a46637a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e33c96 1.1.5 bump (rhbz#2517238)