$ git clone -n https://src.fedoraproject.org/rpms/perl-Mojo-IOLoop-ReadWriteProcess.git /var/lib/mock/f45-build-24925-607/root/chroot_tmpdir/scmroot/perl-Mojo-IOLoop-ReadWriteProcess
Cloning into '/var/lib/mock/f45-build-24925-607/root/chroot_tmpdir/scmroot/perl-Mojo-IOLoop-ReadWriteProcess'...
$ git fetch origin e1b507d2fc8b6c258ff86c400d3f44027b7c8e1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mojo-IOLoop-ReadWriteProcess
 * [new ref]         e1b507d2fc8b6c258ff86c400d3f44027b7c8e1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1b507d Build require syscall.ph for tests on RISC-V