$ git clone -n https://src.fedoraproject.org/rpms/perl-IO-Socket-IP.git /var/lib/mock/f40-build-2018202-46392/root/chroot_tmpdir/scmroot/perl-IO-Socket-IP
Cloning into '/var/lib/mock/f40-build-2018202-46392/root/chroot_tmpdir/scmroot/perl-IO-Socket-IP'...
$ git fetch origin 2ea84317322d9f51be77f12673b91f73ceb62e97:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-IO-Socket-IP
 * [new ref]         2ea84317322d9f51be77f12673b91f73ceb62e97 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ea8431 0.42 bump (rhbz#2225678)