$ git clone -n https://src.fedoraproject.org/rpms/perl-RT-Client-REST.git /var/lib/mock/f45-build-26005-614/root/chroot_tmpdir/scmroot/perl-RT-Client-REST
Cloning into '/var/lib/mock/f45-build-26005-614/root/chroot_tmpdir/scmroot/perl-RT-Client-REST'...
$ git fetch origin 3445aa9c13382ad7d5ba4b78db889da208e0707f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-RT-Client-REST
 * [new ref]         3445aa9c13382ad7d5ba4b78db889da208e0707f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3445aa9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild