$ git clone -n https://src.fedoraproject.org/rpms/rust-titlecase.git /var/lib/mock/f45-build-45506-823/root/chroot_tmpdir/scmroot/rust-titlecase
Cloning into '/var/lib/mock/f45-build-45506-823/root/chroot_tmpdir/scmroot/rust-titlecase'...
$ git fetch origin 512d84fd7df5f075fd8c20983700c3e09e630ba4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-titlecase
 * [new ref]         512d84fd7df5f075fd8c20983700c3e09e630ba4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 512d84f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild