$ git clone -n https://src.fedoraproject.org/rpms/perl-File-Path-Tiny.git /var/lib/mock/f45-build-23576-598/root/chroot_tmpdir/scmroot/perl-File-Path-Tiny
Cloning into '/var/lib/mock/f45-build-23576-598/root/chroot_tmpdir/scmroot/perl-File-Path-Tiny'...
$ git fetch origin 2c71dcd470e881c4066e9bf1a5e9ee4b860bf1c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-File-Path-Tiny
 * [new ref]         2c71dcd470e881c4066e9bf1a5e9ee4b860bf1c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c71dcd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild