$ git clone -n https://src.fedoraproject.org/rpms/perl-DBD-MySQL.git /var/lib/mock/f40-build-749755-114632/root/chroot_tmpdir/scmroot/perl-DBD-MySQL
Cloning into '/var/lib/mock/f40-build-749755-114632/root/chroot_tmpdir/scmroot/perl-DBD-MySQL'...
$ git fetch origin ba9e0dd65cca100d32eda9ae7d93a913e37fe35d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DBD-MySQL
 * [new ref]         ba9e0dd65cca100d32eda9ae7d93a913e37fe35d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba9e0dd 5.002 bump (rhbz#2245834)