$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-HTTP-Server-Simple-StashWarnings.git /var/lib/mock/f45-build-26684-618/root/chroot_tmpdir/scmroot/perl-Test-HTTP-Server-Simple-StashWarnings
Cloning into '/var/lib/mock/f45-build-26684-618/root/chroot_tmpdir/scmroot/perl-Test-HTTP-Server-Simple-StashWarnings'...
$ git fetch origin ea50e1fb4b8ec834f2f1c17663bf441d5c8eb806:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-HTTP-Server-Simple-StashWarnings
 * [new ref]         ea50e1fb4b8ec834f2f1c17663bf441d5c8eb806 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea50e1f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild