$ git clone -n https://src.fedoraproject.org/rpms/rust-text_placeholder.git /var/lib/mock/f45-build-45456-823/root/chroot_tmpdir/scmroot/rust-text_placeholder
Cloning into '/var/lib/mock/f45-build-45456-823/root/chroot_tmpdir/scmroot/rust-text_placeholder'...
$ git fetch origin e5251e496013ffbeed36466d72f512851a31f791:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-text_placeholder
 * [new ref]         e5251e496013ffbeed36466d72f512851a31f791 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5251e4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild