$ git clone -n https://src.fedoraproject.org/rpms/perl-Test2-Plugin-IOEvents.git /var/lib/mock/f45-build-26930-620/root/chroot_tmpdir/scmroot/perl-Test2-Plugin-IOEvents
Cloning into '/var/lib/mock/f45-build-26930-620/root/chroot_tmpdir/scmroot/perl-Test2-Plugin-IOEvents'...
$ git fetch origin 3574374b2044d319b1aac4d76b2eef204229b8d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test2-Plugin-IOEvents
 * [new ref]         3574374b2044d319b1aac4d76b2eef204229b8d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3574374 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild