$ git clone -n https://src.fedoraproject.org/rpms/perl-String-Escape.git /var/lib/mock/f45-build-26284-616/root/chroot_tmpdir/scmroot/perl-String-Escape
Cloning into '/var/lib/mock/f45-build-26284-616/root/chroot_tmpdir/scmroot/perl-String-Escape'...
$ git fetch origin 9fc8c0ab6a5a2a07d769310bf6e425c26a8b3165:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-Escape
 * [new ref]         9fc8c0ab6a5a2a07d769310bf6e425c26a8b3165 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9fc8c0a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild