$ git clone -n https://src.fedoraproject.org/rpms/perl-WWW-Form-UrlEncoded.git /var/lib/mock/f45-build-27402-624/root/chroot_tmpdir/scmroot/perl-WWW-Form-UrlEncoded
Cloning into '/var/lib/mock/f45-build-27402-624/root/chroot_tmpdir/scmroot/perl-WWW-Form-UrlEncoded'...
$ git fetch origin b2b5f364c917b50522ffa7d6b8ff47ff211771eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WWW-Form-UrlEncoded
 * [new ref]         b2b5f364c917b50522ffa7d6b8ff47ff211771eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2b5f36 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild