$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_mkdir.git /var/lib/mock/f45-build-45992-830/root/chroot_tmpdir/scmroot/rust-uu_mkdir
Cloning into '/var/lib/mock/f45-build-45992-830/root/chroot_tmpdir/scmroot/rust-uu_mkdir'...
$ git fetch origin 02f618884ce0128247d688fe03624a972e1a5e27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_mkdir
 * [new ref]         02f618884ce0128247d688fe03624a972e1a5e27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 02f6188 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild