$ git clone -n https://src.fedoraproject.org/rpms/perl-AnyEvent-HTTP-Server.git /var/lib/mock/f40-build-1179372-21865/root/chroot_tmpdir/scmroot/perl-AnyEvent-HTTP-Server
Cloning into '/var/lib/mock/f40-build-1179372-21865/root/chroot_tmpdir/scmroot/perl-AnyEvent-HTTP-Server'...
$ git fetch origin 045525f5bc12ca2d41b7cc0c99d52e7c9ff73e35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-AnyEvent-HTTP-Server
 * [new ref]         045525f5bc12ca2d41b7cc0c99d52e7c9ff73e35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 045525f SPDX migration