$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-Server.git /var/lib/mock/f45-build-25388-610/root/chroot_tmpdir/scmroot/perl-Net-Server
Cloning into '/var/lib/mock/f45-build-25388-610/root/chroot_tmpdir/scmroot/perl-Net-Server'...
$ git fetch origin a26b5668af5f9de3fe3c9ecc678a7e89f534328d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-Server
 * [new ref]         a26b5668af5f9de3fe3c9ecc678a7e89f534328d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a26b566 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild